The Cardiovascular System : The Heart And The Heart

The atrium chambers are small and collect blood returning to the heart from the systemic or pulmonary circulation. The ventricles are larger than the atrium chambers and they pump blood out into the circulation. The right atrium and right ventricle are separated by the tricuspid valve. The tricuspid valve has three flaps that prevent backflow of the blood from the right ventricle into the right atrium. The left side of the heart has a mitral valve also known as the bicuspid valve that consists of two flaps that separates the left atrium and left ventricle. The heart has a thick wall that is mainly of muscle and is constantly contracting and relaxing through every heartbeat. The hearts wall has three layers of tissue which consist of the innermost layer called the endocardium which is a smooth, thin membrane that lines the inside of the champers of the heart and forms the surface of the valves. The second layer is the middle layer that is called the myocardium. It is the muscular wall of the heart and is made of many layers of cardiac muscle which is striated and involuntary muscle tissue. Then the outer layer of the heart is the epicardium that is a double layered fibrous sac that covers and protects the heart.

One of the most important systems in the body, keeping it alive, is the cardiovascular system. As a part of the circulatory system, the cardiovascular system pumps blood throughout the body through a network of many arteries and veins, providing it with nutrients and oxygen. Also, the cardiovascular fights infections and disease in the body and creates blood cells. Never the less, blood acts as a filtration system for the body and removes waste, cell debris, or bacteria from the bloodstream.

The cardiovascular system, which consists of the heart and blood vessels, is the circulatory systems in our body. The major function of the system is transportation; the heart is the system pump and the blood vessels are the delivery routes. The heart transport respiratory gases, nutrients, wastes, and other substances vital to the body’s homeostasis to and from the cells by using the blood as a medium.

Composed of the heart, blood vessels, and blood, the cardiovascular system is the body system that carries out the tasks of pumping and transporting blood, oxygen, nutrients, and waste products, and other substances throughout the body.

Oxygen and nutrients the body requires for function are pumped around this complex network of blood vessels by the heart. At roughly the size of a human fist, the heart is a four-chambered muscle and performs two functions of circulation simultaneously and continuously. Systemic and pulmonary circulation. The heart is made up from three separate layers of cardiac tissue; the outer layer called the pericardium, which is a double sac-like outer covering with serous fluid inside to keep the middle layer, the myocardium from adhering to the outer layer. This middle layer of the heart is the heart muscle which is thicker on the left side, to aid with the pressure needed to sustain systemic circulation. The inner layer of the heart is the endocardium. It’s lining is smooth to help prevent the blood which circulates around the inside of the heart from clotting. The heart is the human body’s in-built pacemaker, and the electrical signals sent through the it cause the heart to contract and relax. This process is triggered by the autonomic nervous system and the contraction and relaxing cycle is

A healthy heart pumps blood continuously through the circlutory system. It’s normal size is a little larger than a fist. The heart has four chambers, two on the right and two on the left. The two upper chambers are called the atria and the lower two are known as the ventricles. The right atrium takes in deoxygenated blood from the rest of body and sends it back out to the lungs through the right ventricle where the blood becomes oxygenated. Oxygenated blood travels from the lungs to the left atrium, then onto the left ventricle, which pumps it to the rest of the body.

The cardiovascular system is made up of two circulatory routes, the pulmonary circuit and the systematic circuit. The blood is oxygenated in the lungs during the pulmonary circuit and then the oxygenated blood is circulated through the rest of the body by the systematic circuit.

The cardiovascular systems function is to pass blood through ones body keeping their muscles oxygenated, to keep nutrients that are needed in the body and to help get rid of metabolic waste. The cardiovascular system is made up of three components, these are; the heart, the blood and the blood vessels.

The heart is one of the strongest muscles in the body. According to Henry Gray's “Anatomy of the Human Body” (2015), the heart is roughly the size of a large fist and weighs between about 10 to 12 ounces (280 to 340 grams) in men and 8 to 10 ounces (230 to 280 grams) in women (Lewis, 2015). The human heart has four chambers: two upper chambers (the atria) and two lower ones (the ventricles). The heart's outer wall consists of three layers; epicardium (outermost wall), myocardium (middle wall), endocardium (inner layer). The tricuspid valve and the mitral valve make up the atrioventricular (AV) valves, which connect the atria and the ventricles (Lewis, 2015). The function of the heart is divided into two pathways: the pulmonary circuit and the systemic circuit. In the pulmonary circuit, deoxygenated blood travels to the lungs by way of the pulmonary artery, then returns as oxygenated blood to the left atrium of the heart via the pulmonary vein. The systemic circuit, delivers oxygenated blood to the body from the left ventricle to the aorta, and from there enters the arteries and capillaries where it supplies the body's tissues with oxygen. Then, deoxygenated blood returns through the veins to the venae cavae, re-entering the heart's right atrium to restart the

The two major cardiovascular circuits in the human body is the pulmonary circuit and the systemic circuit. Both of these circuits work together in order to make the body function properly. The major difference between these two circuits is where the blood travels and what areas of the body the blood reaches. The pulmonary circuit carries blood to only the lungs which focuses more on gas exchange. The systemic circuit carries blood to the tissues in the entire body which focuses more on supplying the tissues with oxygen and nutrients. Another interesting fact that separates these two circuits is the blood itself and the process that which it flows. At the beginning of the pulmonary circuit, the blood is deoxygenated. The oxygen poor blood then

Another group of cells that act as a pacemaker for the heart is the sinoatrial node, which sends out action potentials that contract the ventricles and spreads to the atrioventricular node to lead to the contraction of the atrium. For the following lab, two techniques where utilized to examine the physiology of the heart an electrocardiograph and blood pressure test. The electrocardiograph was to test the heart rate and examine the depolarization and repolarization of the heart using the QRS complex. The blood pressure test was to see the differences in blood pressure in different scenarios based on the Korotkoff sounds. Overall, it is important to understand the general physiology of the heart, blood pressure, and electrocardiograph because it is a key component to being alive and if it does not function properly or efficiently if can result in

The cardiovascular system is one of the major body systems. The cardiovascular system is a transportation device that transports waste products,oxygen,nutrients,carbon dioxide, and hormones throughout the body through the blood. The cardiovascular system is made up of the heart, arteries, veins, capillaries (also known as blood vessels and blood. The heart is a hollow fist sized organ that is made up of muscle.It contains 4 chambers that all involuntarily contract to pump blood throughout the body. The four chambers are then separated into two sides (right side and left side). Both sides contain an atria and ventricle which pumps the blood out of the heart. Both sides also stop the black flow of blood. The heart also contains 3 layers.

The cardiovascular system consists of the heart, which is a muscular pumping device, and vessels called arteries, veins, and capillaries (Silverthorn, D.U, et al. 2016). The heart pumps blood around a closed unit of vessels as it passes through circulations of the body.

The heart, blood vessels, and the blood itself are what the cardiovascular system is composed of. The heart, being the most important part of this system, is uniquely designed, and is the body 's pump. It allows for every part of the body to receive the oxygen and nutrients it needs to function properly and efficiently.

From my high school Human Anatomy and Physiology class, I vaguely remember the structure of the human heart. The human heart is fairly simple at a non-cellular level. Your heart contains a right and left atrium, and directly under those, a left and right ventricle. These are the four chambers of the human heart. Your heart also has two main exiting arteries: the pulmonary trunk which exits from the right ventricle and the aorta which exists from the left ventricle. The pulmonary trunk carries “dirty”, deoxygenated blood from the right ventricle to the two lungs to become oxygenated in a system called the pulmonary circuit. This oxygenated blood is then carried back to the left atrium by the pulmonary veins. The aorta carries this freshly oxygenated blood to the entire body in a system called the systemic circuit. The inferior vena cava and superior vena cava are major arteries leading into the heart, carrying the “dirty” blood to be cleaned. (See figure one). I know of these parts, however I want to know how these parts are able to function together as the body ages.