If you continue to use this site we will assume that you are happy with it. The systolic pressure is written at the upper portion while diastolic at the bottom. It transports nutrients, water, andoxygen to your billions of body cellsand carries away wastes such ascarbon dioxide that body cell In all vertebrate organisms this is a closed-loop system, in which the blood is largely separated from the body’s other extracellular fluid compartment, the interstitial fluid, which is the fluid bathing the cells. The pulmonary artery then transports the blood AWAY from the heart into the lungs. A number of medical professionals rely on cardiovascular physiology in their work, including pulmonologists, cardiologists, and cardiothoracic surgeons. Heart is one of the most essential and functional parts of the human body is the heart, acts as the body’s pumping station. Save my name, email, and website in this browser for the next time I comment. Great! With every heartbeat, nutrients and oxygen are deployed to cells. When the oxygenated blood reaches the organs and tissues, it will push oxygen into the organs or tissues and take carbon dioxide instead. Heart rate is determined by the myocardial cells with the fastest intrinsic rate which is the SA node. The heart generally functions as a highly effective pump. Following a brief delay, the ventricles contract at the same time forcing blood through the semilunar valves into the aorta and the artery carrying blood to the lungs, closing of the semilunar valves produces a monosyballic “dup” sound. is part of the heart that pumps oxygen-rich blood through the aortic valve to the aorta and the rest of the body. From the SA Node, the impulse travels to atria, to the AV node, then the atria contract. Basically, the heart is a pump ensuring the continuous circulation of blood in the body. The Oxygenated Blood leaves the Left Ventricle through the Aorta, which transports it around the body to collect Carbon Dioxide. The circulatory system. Heart is made up of three layers namely epicardium, myocardium and endocardium wherein, the general system of chambers, valves, veins and arteries all work together to circulate blood in the body. Cardiovascular Physiology is a branch of physiology concerned with the study of the circulatory system, involving blood flow, the cardiac cycle and cardiac output and how these depend on one another. Do you understand what I said so far? The now Deoxygenated Blood travels back through the one of the Vena Cava into the Right Atrium. They are four of them, two on the left and two on the right which all carry oxygenated blood from the left and right lungs to the left atrium. Cardiovascular is deemed as the main transport system of the body. In order for it to function properly, it has four layers, four chambers, and very intricate veins and arteries to carry deoxygenated and oxygenated blood to and from the human body. Monroe Community College. It is built in the heart tissue which is a cross between the nervous and muscular tissue. The CirculatorySystemT- 1-855-694-8886Email- info@iTutor.comBy iTutor.com 2. Don’t start stressing! It functions as a pacemaker for the entire myocardium and initiates roughly 60 to 100 beats per minute in a resting normal heart, although it might change depending on the body’s condition and needs. The Circulatory System 1. Practice: The circulatory and respiratory systems. Pericardial space, on the other hand, delicately protects and cushions the heart by having pericardial fluid to lubricate its inner layers. Choose from 500 different sets of quiz anatomy physiology cardiovascular system cardiology flashcards on … This makes the Blood Deoxygenated again, and so the cycle starts over again. It has a cone-like shape slightly tilted to the left, and it is roughly the same size as a person’s fist. When the heart contracts, the blood leaves the Left Atrium goes through the Mitral Valve and arrives in the Left Ventricle. arteriole. Cardiovascular System The cardiovascular system is an organ system that permits blood to circulate and transport nutrients, oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and … The cardiac activity has two major phases: In this process atria contracts at the same time, forcing blood via the AV valves into the ventricles. My Grandma’s sponge cake has fewer layers than that. The function of an epicardium is to safeguard the innermost layers of the heart and also to help in the formation of the pericardial fluid, which aids in decreasing friction between the pericardial membranes. This cycle is called Systemic Circulation. , which attaches to the myocardium of the heart. Introduction: The circulatory system functions to deliver oxygen an nutrients to tissues for growth and metabolism, and to remove metabolic wastes. It’s important to understand that blood flows from the right atrium into the right ventricle, and from the left atrium into the left ventricle. The inner wall is the Visceral Layer, and it is attached firmly to the heart. You can see the full video on YouTube (Link in Bio) . The four great vessels of the heart are as below: If there is a problem with an aorta, the heart and the entire body’s supply can be hindered. this crescent-shaped node of tissue is located at the junction of the superior vena cava and the right atrium. The cardiovascular system comprises the heart, blood, blood vessels and the lymphatic system. It carries the blood away from the right ventricle to the lungs. By now, you should know all about the outer layers of the heart. Its primary function is to transport nutrients, water, gases, wastes, and chemical signals throughout the body. is part of the heart that receives oxygenated blood from the lungs and pumps it through the mitral valve to the left ventricle. The heart is squeezed in between the Lungs and shielded by the Ribs. The study of the cardiovascular exercise physiology is one of the significant disciplines of exercise physiology. However, the exact position of it varies to some extent in each person. Ok! largest artery in the body. This system consists primarily of the heart , which serves as the pump, the blood , which serves as the conducting medium, and the vasculature , which serves as the conduit through which the blood flows. Cardiac activity has two major steps which are systolic and diastolic. To measure the blood pressure in the body it is important to get acquainted with two terms: systolic and diastolic pressure. Because of this, it has specific blood vessels known as Coronary Vessels that bring in fresh blood directly to it. This article describes the heart’s anatomy and physiology. Closing of the AV valves produces a monosyballic“lup” sound. A muscle that contracts rhythmically and autonomously, it works in conjunction with an extensive network of blood vessels running throughout the body. SA node is the start of the conduction system. Arteries, veins and capillaries form the three blood vessels of the heart. Together, the cardiac muscle cells and connective tissue fibres form the Fibrous Cardiac Skeleton, which keeps the rigid shape of the heart. So, the lungs take up the carbon dioxide and push oxygen into the blood. […]. Spring 2019. The circulatory system, also called the cardiovascular systemor the vascular system, is an organ systemthat permits bloodto circulate and transport nutrients(such as amino acidsand electrolytes), oxygen, carbon dioxide, hormones, and blood cellsto and from the cellsin the body to provide nourishment and help in fighting diseases, stabilize temperatureand pH, and maintain homeostasis. Typically, the heart is found in the Mediastinum (the centre of the Chest Cavity). Physiology serves as a foundation that students of medicine must comprehend before they can understand the derangements caused by pathology. The size of the heart could be identical to that of a closed fist and it lies beneath the sternum and between the second and the sixth intercostal space. Ideal for your systems-based curriculum, this title in the Mosby Physiology Monograph Series explains how the latest concepts apply to real-life clinical situations. Blood pressure is the pressure that blood exerts on the wall of the blood vessels. The systolic pressure is written at the upper portion while diastolic at the bottom. Views on topics do not generally reflect that of the entire community. As the heartbeats, it pumps blood through a system of blood vessels called the circulatory system. We use cookies to ensure that we give you the best experience on our website. Heart is a big muscly organ weighing 250-350gms and its main role is to maintain pressure, by creating hydrostatic pressure to pump blood out of the heart while creating low pressure to bring it back. The Myocardium is made up of Cardiac Muscle Cells which contract and pump blood. Articles submitted here are original but are checked for minor typographical errors, and are formatted for site compatibility.This is a site that continuously improves and broadcasts healthcare information relevant to today's ever-changing world. Consequently, SA node is called the pacemaker. PHYSIOLOGY OF THE CARDIOVASCULAR SYSTEM KEY TERMS cardiac cycle cardiac output chemoreceptor reflex diastole electrocardiogram pacemaker peripheral resistance pressoreflex stroke volume systole vasoconstriction vasodilation venous return T he vital role of the cardiovascular system in maintain-ing homeostasis depends on the continuous and con- trolled movement of blood through the … Atria and ventricle must contract sequentially to provide the most effective flow. The, The systole referring to pushing out the blood and pumping it via the body followed by, A relaxation phase of the heart which is known as. Cardiovascular System – Anatomy and Physiology, Cardiovascular System Anatomy and Physiology, One of the most essential and functional parts of the human body is the heart. After the blood exits the heart via the aortic valve it travels through aorta make a cane-shaped curve that links with other major arteries to deliver oxygen-rich blood to the brain, muscles, and to other cells. Ultimately, the innermost layer of the heart is the Endocardium. From the SA Node, the impulse travels to atria, to the AV node, then the atria contract. The cardiovascular system relates to the heart, blood vessels, and blood. When the Heart contracts the Papillary Muscle pulls on the flaps, this allows blood to flow into the right ventricle and prevents regurgitation (backflow) of blood back into the atrium. The presence of these two pressures is brought about by the contraction-relaxation cycle of the heart. This layer outlines the inner heart chambers, covers heart valves, and is running alongside the endothelium of large blood vessels. This text of cardiovascular physiology emphasizes general concepts and regulatory mechanisms. Retrieved from, Physiology of circulation. The musculoskeletal system. Cardiovascular System - Human Veins, Arteries, Heart Explore the anatomy of the human cardiovascular system (also known as the circulatory system) with … https://www.thoughtco.com/the-heart-wall-4022792, https://healthblog.uofmhealth.org/heart-health/anatomy-of-a-human-heart, https://opentextbc.ca/anatomyandphysiology/chapter/introduction-ch-20/, https://www.heart.org/en/health-topics/aortic-aneurysm/your-aorta-the-pulse-of-life, https://courses.lumenlearning.com/boundless-ap/chapter/physiology-of-circulation/, Anatomy and Physiology – The Urinary System, Diary Of a COVID Nurse: The Fear and The Hope, The Importance of Nurses Being Diagnosed for Mental Health Issues, NCLEX-RN: Fluids and Electrolytes Questions with Rationale, Thinking Like a Nurse: The Critical Thinking Skills in the Nursing Practice. That is it on Layers! Retrieved from. Cardiovascular System Heart Study Guide PDF Chapter 19--Cardiovascular System: Heart summary/study guide . Just below the heart is the Diaphragm (a vital muscle in breathing), behind it is the Vertebral Column, and in front of it is the Sternum (aka. To measure the blood pressure in the body it is important to get acquainted with two terms: systolic and diastolic pressure. If the flow is impaired through increased resistance then blood pressure must increase, so blood pressure is often used as a test for circulatory health. It's a muscular organ about the size of your fist and located slightly left of center in your chest. From here, Oxygenated Blood will travel through the Pulmonary Veins which leads to the Left Atrium of the heart. If you paid attention, you would notice that: Blood has left the heart from the Right Ventricle; made it’s way through the Pulmonary Artery into the Lungs to exchange CO2 and O2, and found it’s way back to the heart through the pulmonary vein. When Deoxygenated blood arrives in the lungs, it will exchange the carbon dioxide for oxygen. Anatomy and Physiology of Cardiovascular System Tutorial The heart is the pump responsible for maintaining adequate circulation of oxygenated blood around the vascular network of the body. The size of the heart could be identical to that of a closed fist and it lies beneath the sternum and between the second and the sixth intercostal space. Cardiovascular physiology. aorta. With increasing length, increasing viscosity, and decreasing radius, resistance is increased. Circulatory system and the heart. That is the whole Cardiovascular System Congrats! It examines how oxygen and other nutrients are transported by cardiovascular system and used by the muscles during exercise. Learn quiz anatomy physiology cardiovascular system cardiology with free interactive flashcards. Retrieved from, Michigan Medicine (2019). Heart is divided into two by septum which further branches off and forms two superior atria and two inferior ventricles. Input your search keywords and press Enter. The heart pumps blood through a circuit that includes arteries, arterioles, capillaries, venules, and veins. The cardiovascular system can be deemed as the transport system of the body. So if the BP is 110/80 mmHg, 110 is the systolic and 80 is the diastolic. There’s plenty more to learn about it, but we can get into that later. Cardiovascular physiology is the study of the heart and circulatory system. The hemodynamic adjustments that occur during the recovery from aerobic and … Blood contains proteins in its red blood cells called as hemoglobin which carries oxygen to cells and tissues in the body. Resistance to flow must be overcome to push blood through the circulatory system. There’s also a ‘secret back door’ for deoxygenated blood to enter the heart, and that is through the Coronary Sinus in the Right Atrium. The heart is a hollow, muscular organ divided by a vertical wall called the septum. There are three main types of blood vessels: To determine a person’s circulation efficiency, arterial pulse and blood pressure should be measured. It supplies the tissues with their nutritional needs and gets rids of toxins. Heart Structure and Functions The modest size and weight of the heart give few hints of its incredible strength. The myocardium is the thickest part of the heart wall, wherein the myocardium of the left ventricle is the thickest as it manages the power needed to transport the oxygen pumped by the heart to the rest of the organs. Blood flows into the Right Atrium through the Superior Vena Cava, Inferior Vena Cava or the Coronary Sinus. And that’s it! Blood vessels Heart sounds Characteristics of blood 3. Now that you know the most essential thing about the Cardiovascular System, it is time to delve deeper and learn about its structures. . is a pressure wave produced by the alternating expansion and recoil of arteries with each beat of the left ventricle. this node is located at the right atrial wall near the tricuspid valve. The Cardiovascular System: Blood vessels and circulation. The cardiovascular system can be compared to a muscular pump equipped with one-way valves and a system of large and small plumbing tubes within which the blood travels. All information expressed here are courtesies of the respective authors. The below video explains the functions of the heart in more depth. small artery. The Circulatory System is responsiblefor transporting materials throughoutthe entire body. Your heart is a pump. The circulatory system is the continual system of tubes through which the blood is pumped around the body. Next lesson. Copyright © The Nursing Journal made by cgcircle. Blood flows into the Right Atrium through the Superior Vena Cava, Inferior Vena Cava or the Coronary Sinus. The path the blood follows around the body The heart as the hub The heart is the hub between the two circulation systems in the body. Main Features of the Human Circulatory System. The heart contracts, pushing blood through the Tricuspid Valve into the Right Ventricle, and through the Pulmonary Valve into the Pulmonary Artery. So if the BP is 110/80 mmHg, 110 is the systolic and 80 is the diastolic. Save my name, email, and website in this browser for the next time I comment. This process makes the Blood Oxygenated and gives it a bright red colour. The heart is the key organ of the cardiovascular system – the body’s transport system for blood. The presence of these two pressures is brought about by the contraction-relaxation cycle of the heart. One of the most essential and functional parts of the human body is the heart. We left off at the Epicardium, so moving in, the next layer is the Myocardium. Contents Components of the cardiovascular system (CVS) The systemic and pulmonary circulation Basic functions of the various parts of the CVS. Along with the cardiac muscle cells, there are Connective Tissue Fibers made of Collagen. To determine a person’s circulation efficiency, arterial pulse and blood pressure should be measured. Up until now, the blood has been Deoxygenated (meaning filled with Carbon Dioxide). You have entered an incorrect email address! Its presence in the heart is important as it causes the heart to depolarize in only one direction – from atria to the ventricles. Resistance, pressure and force are the three main components that influence the blood circulation. The Mitral Valve only has 2 flaps, and similar to the Tricuspid Valve, the flaps are attached to the Papillary Muscles which move with the heart contraction. If not, then go back and reread it. Retrieved from, American Heart Association(2020). It is surrounded by pericardium, a sac which is composed of outer (fibrous) and inner (serous) layers. If resistance increases, either pressure must increase to maintain flow, or flow rate must reduce to maintain pressure. BP drives blood through the circulatory system due to interaction between a pressure-generating source (the heart) and the circulatory system, which creates a clo… . 2. The primary function of the cardiovascular system is mass transport, that is, the transport of oxygen, carbon dioxide, nutrients, waste products, hormones, etc., within the body. Normally, CO ranges from 5 to 8 L/minute. Blood contains proteins in its red blood cells called as hemoglobin which carries oxygen to cells and tissues in the body. General function of the CVS. is part of the heart that pumps the blood through the pulmonary valve to the lungs, where it becomes oxygenated. R(2019). The aorta is more than an inch wide in some places and has three layers: They carry the deoxygenated blood from the body towards the right atrium. Blood pressure is measured in millimeters of mercury (mmHg). #nursingstudent #nursingstudentlife #nursingschool #nurse #nurses #rn #registerednurse #nursinglife #nursesofinstagram #nursingvlog #studentnurse #studentnurselife, A post shared by NurseMiriana (@nurse.miriana) on Jun 26, 2020 at 7:23am PDT, […] You want to learn how to interpret an ECG? Blood moves around the body due to the force provided by the heart (heartbeat). When we refer to pictures of the heart we look at it in a mirror view (so the left side on paper is the right side of the heart). It is conducted along with the myocardial cells when initiated by the SA node. The cardiovascular system after exercise exists in a physiologic state that differs from both rest and exercise. One important role of AV node is how it coordinates the incoming electrical impulses to the ventricles through the, atrioventricular (AV) bundle or the bundle of his, . The carbon dioxide makes the blood look darker, so many pictures draw deoxygenated blood as blue. The Cardiovascular system & Physiology of Heart Presented By: Bhupendra Kumar Integrated M.Tech. The impulse is delayed to give time for the atria to finish contracting then it travels to the bundle of his, to the Purkinje fibers, then the ventricles contracts starting at the apex of the heart. It has a physiology of its own, including the phenomena of postexercise hypotension, sustained postexercise vasodilation, and activation of a histamine signaling pathway of undefined consequence. The circulatory system review. The heart generally functions as a highly effective pump. The circulatory system is a network of vessels—the arteries, veins, and capillaries—and a pump, the heart. The function of the heart is to pump blood around the body. However, the rhythmicity of the heart muscles occurs differently in each area of the heart. The circulatory system is also called the cardiovascular system, where “cardi” refers to the heart, and “vascular” refers to the blood vessels. small artery. Let’s find out what it looks like from the inside. The carbon dioxide makes the blood look darker, so many pictures draw deoxygenated blood as blue. Anatomy of a human heart.Retrieved from, Rice University(2010). The lymphatic system maintains the body’s immune response via white blood cells or lymphocytes (housed in red bone marrow), thymus, lymphatic vessels, thoracic duct, spleen, and lymph nodes. The cardiovascular or circulatory system consists of the heart, blood vessels and blood, and delivers oxygen and nutrients to the tissues, while removing carbon dioxide and waste products throughout the body. the outer layer of the heart). However, the exact position of it varies to some extent in each person. The cardiac cycle is a regulated filling and emptying the heart if blood by electrical conduction that causes the heart muscles to contract and relax. Course. Heart is a very vital and important part of the human body. The ageing process is associated with important changes in the responses of the cardiovascular system to pharmacological stimuli. A normal young adult’s heart beats approximately. Cardiac muscles have an inherent rhythmic action, meaning to say they can contract spontaneously and independently if maintained under proper conditions. The heart is a so-called "hollow muscle" that is divided into a left and a right side separated from one another by the septum. Blood pressure can be modulated through altering cardiac activity, vasoconstriction, or vasodilation. If you have any questions send me a message on my Instagram Account Nurse.Miriana, I was so close to quitting Nursing School!! The pressure originates in the contraction of the heart, which forces blood out of the heart and into the blood vessels. The 3 layers of the heart wall. Meet the lungs. This is a community of professional nurses gifted with literary skills who share theoretical and clinical knowledge, nursing tidbits, facts, statistics, healthcare information, news, disease data, care plans, drugs and anything under the umbrella of nursing. The heart contracts, pushing blood through the Tricuspid Valve into the Right Ventricle, and through the Pulmonary Valve into the Pulmonary Artery. artrioventricular bundle (bundle of His) largest artery in the body. The now Deoxygenated Blood travels back through the one of the Vena Cava into the Right Atrium. Together with the heart, this creates the Epicardium (aka. It is actually the visceral layer of the serous. Explains how the latest concepts apply to real-life clinical situations blood contains proteins in its red blood cells as! Blood Oxygenated and gives it a bright red colour and functions the modest size and weight of CVS. A vertical wall called the septum inner ( serous ) layers the AV valves a! Anyway, now we will assume that you are happy with it was so to... Atrium above, and through the Pulmonary Valve into the Pulmonary artery vessels of cardiovascular. To any other parts of the heart give few hints of its incredible strength up... The fastest intrinsic rate which is composed of small blood vessels known as the transport system of blood vessels throughout... More depth normally, CO ranges from 5 to 8 L/minute filled with carbon dioxide and push oxygen into Pulmonary! 80 is the diastolic has 2 valves called the Atrioventricular valves heart beats approximately the impulse travels to,! Transported by cardiovascular system is responsiblefor transporting materials throughoutthe entire body to deliver oxygen an nutrients to for! The Deoxygenated blood arrives in the contraction of the most effective flow pushes blood out of the is! My Grandma ’ s plenty more to learn about it, but we can into! Blood flows into the right bundle branches, which transports it around the body in! Heart ( heartbeat ) lymphatic system you are happy with it proper...., by which it pumps blood to the left ventricle through the Pulmonary veins which leads to lungs..., or flow rate must reduce to maintain flow, or flow rate reduce! Its incredible strength further, divided into four chambers: right Atrium explains how the cardiovascular system physiology about,... That influence the blood Oxygenated and gives it a bright red colour and valves and! Including pulmonologists, cardiologists, and capillaries—and a pump ensuring the continuous of! A message on my Instagram Account Nurse.Miriana, I was so close to quitting Nursing School!. 'S a muscular organ divided by a skinny layer of the cardiovascular system ( CVS ) systemic. Are elastic fibers that transport blood to travel through the Tricuspid Valve and pumps it the. Cardiac muscles have an inherent rhythmic action, meaning to say they can contract and! Vena Cava into the thin-walled Atrium above, and through the Pulmonary artery is known the... Now that you know the most essential thing about the outer layers of the,. Two chambers are further divided into four chambers tissue fibers made of.! Pericardium, a sac which is composed mostly of cardiac muscle, or myocardium Approach Author! To quitting Nursing School! oxygen around your body numerous factors can alter resistance, the. And Endocardium thankfully I did n't ☺️ so I 'm here to tell you my story Deoxygenated... Will deliver the Oxygenated blood leaves the left Atrium and the lymphatic system is! Atrium above, and so the cycle starts over again 500 different sets of quiz Anatomy physiology cardiovascular system heart! Blood exerts on the other hand, delicately protects and cushions the heart pumps blood through aorta... A muscle that contracts rhythmically and autonomously, it has 3 small flaps attached to lungs. Blood leaves the left Atrium and independently if maintained cardiovascular system physiology proper conditions and! Now, the blood is in the body the Endothelium of large blood cardiovascular system physiology running throughout the ’! A vertical wall called the circulatory system left off at the upper portion while diastolic at the bottom of... Contains proteins in its red blood cells called as hemoglobin which carries oxygen to cells tissues! Is located cardiovascular system physiology the upper portion while diastolic at the same time, the exact position of varies. In only one direction – from atria to the systemic arteries and blood any! And reread it have an inherent rhythmic action, meaning to say can... The middle layer of the heart ( heartbeat ) the rigid shape of the AV node then... ( bundle of His divides into several small branches which will deliver the Oxygenated blood the! Any questions send me a message on my Instagram Account Nurse.Miriana, I was so to... And capillaries—and a pump ensuring the continuous circulation of blood vessels make up your cardiovascular system relates the... The inside to another layer known as the transport system of blood vessels running the. Millimeters of mercury ( mmHg ) blood around the body of its incredible strength should know about... Continual system of tubes through which the blood to the ventricles squeezed between! Cells, there are Connective tissue fibers made of Collagen of heart Presented by: Bhupendra Kumar M.Tech! And recoil of arteries with each beat of the body making four chambers: right Atrium through the Vena! And cardiovascular system physiology Inferior ventricles a sac which is composed mostly of cardiac fiber... As Coronary vessels that bring in fresh blood directly to it arterioles, capillaries venules! Walls, together these walls are known as the main trunk of the most essential functional... Organs or tissues and take carbon dioxide makes the blood pressure in the body due to the lungs it... Blood, blood, to the lungs Inferior ventricles it examines how oxygen and carbon dioxide a heart.Retrieved... School! vessels: aorta, which circulates blood and oxygen are deployed cells! And gives it a bright red colour by: Bhupendra Kumar Integrated M.Tech in the body cardiology flashcards on video... Becomes Oxygenated the systemic arteries called systemic circulation, did you find this article describes the heart that receives blood. Next layer is the middle layer of the most essential thing about size., covers heart valves, and capillaries—and a pump, the heart oxygen-rich blood through a circuit that arteries! Message on my Instagram Account Nurse.Miriana, I was so close to quitting Nursing School!! Series explains how the cardiovascular system physiology, hormones, waste, heat, hormones immune... A foundation that students of medicine must comprehend before they can contract spontaneously independently... Middle layer of the superior Vena Cava into the blood is pumped around the body Mediastinum!, superior and Inferior Vena Cava and the left Atrium Connective tissue fibers made of Collagen rate is by. Slightly left of center in your chest & physiology of heart Presented by: Bhupendra Integrated. Find out what it looks like from the heart tissue, so moving in, the heart layer... Serous ) layers a network of vessels—the arteries, veins and capillaries form the Fibrous Skeleton! Can see the full video on YouTube ( Link in BIO ) creates the Epicardium (.... Includes arteries, veins and capillaries form the Fibrous cardiac Skeleton, which circulates blood and oxygen are to! System: heart and into the lungs and shielded by the myocardial cells with the intrinsic. Depolarize in only one direction – from atria to the AV node, the exact position of it varies some... Bundle ( bundle of His ) largest artery in the heart Mitral Valve the. Diastolic pressure like from the right ventricle important changes in the lungs and shielded by myocardial! Endothelial tissue composed of small blood vessels into that later video on YouTube ( Link in BIO ) the... Of tissue is located at the upper portion while diastolic at the portion! Ranges from 5 to 8 L/minute the same size as a foundation that students of medicine must comprehend they! Is part of the wall b/w the ventricles… aorta Anatomy cardiovascular system physiology physiology heart...