Components Of The Cardiovascular System

As blood travels through the circulatory system, it is first pumped from the right side of the heart to the lungs through the pulmonary arteries and then separates into arterioles which split into capillaries. Here, the deoxygenated

The hearts function as a double pump that serves two circulations. The pulmonary pump in the right side of heart is provided for the gas exchange in the body, and the systemic circulation in the left side provides the functional blood supply to all body tissues. The functional blood to the heart is provided by the coronary arteries. Right coronary artery supplies the heart through the posterior interventricular and marginal artery branches; and the left coronary artery supplies the heart via anterior interventricular artery and the circumflex artery. The myocardium is drained by great, small, and middle cardiac veins which

The left ventricle contracts, sending the blood to the aorta. The blood is then sent to the rest of the body. On the right side of the heart, the tricuspid valve separates the right ventricle and the right atrium allowing blood to enter the ventricle but not flow backward to the atrium. Blood flows through the pulmonary arteries to go to the lungs. On the left side of the heart, the mitral valve separates the left atrium and the left ventricle. Blood flows from the left ventricle to the aorta through the aortic valves and to the rest of the body. Arteries carry blood with oxygen and other nutrients throughout the blood. Veins take blood back to the heart, which pumps it to the lungs in order to get oxygenated. The heart arteries which are called the coronary arteries provide oxygen and nutrients to the heart muscle the right coronary arteries supply blood to the bottom and the back of the heart. The left coronary arteries split into two vessels. One branch supplies blood to the front of the heart the other branch provides blood to the left side of the heart. An electric system transmits signals throughout the heart to control what is pumping. The electrical signals pass down tot the end of the heart in the ventricles pathways carry this signal throughout the muscle so they can track at the same time to pump blood to the lungs and 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

Tim Taylor, 2012) has argued that cardiovascular system referred to as the circulatory system, is composed of blood within the blood vessels and heart. The function of the heart is pumping the blood through the blood vessels of the body.

The cardiovascular system - The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. It consists of the heart, which powers the whole process, the veins, arteries, and capillaries, which deliver oxygen to tissue at the cellular level. The cardiovascular system carries blood that is low in oxygen away from the heart to the lungs via arteries, where oxygen levels are restored through the air once oxygenated, this blood is then carried throughout the body via arteries, keeping our organs and tissue alive. The cardiovascular system is the workhorse of the body, continuously moving to push blood to the cells. If this important system ceases its work, the body dies.

The heart has two sides, separated by an inner wall called the septum. The right side of the heart pumps blood to the lungs to pick up oxygen. The left side of the heart receives the oxygen-rich blood from the lungs and pumps it to the body. The heart has four chambers and four valves and is connected to various blood vessels. Veins are blood vessels that carry blood from the body to the heart. Arteries are blood vessels that carry blood away from the heart to the body.

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.

In the systemic circuit blood returns from the lungs into the left atrium. Once in the left atrium blood flows though the left atrioventricular valve into the left ventricle. The left ventricle then contracts and the aortic valve opens because of the contraction. Blood then flows through he aortic valve into the ascending aorta and then once in the aorta it is then sent to every organ in the body where it excretes oxygen and intakes carbon dioxide. Finally, the carbon dioxide rich blood returns itself to the heart for the process to reoccur again. Both circuits must always maintain circulation so that blood can be constantly disbursed throughout the body (The Heart, Slide 11

from the superior and inferior vena cava into the right atrium. It then is pumped through

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 left chamber, lower at the heart, takes in oxygenated blood through the mitral valve from the left atrium while it contracts. The aortic valve leading to the aorta is closed while this occurs. At the same time, the aortic valve leading to the aorta is closed giving the ventricle the opportunity to fill with blood. The ventricles contract as both ventricles are full. When the left ventricles contract, the aortic valve opens as the mitral valve closes. When the mitral valve closes it prevents blood from coming back into the left atrium and the opening of the aortic valve giving way for the blood to flow into the aorta. From there it goes throughout the body. The left and right ventricles also contract together, but when the left ventricle

The heart is a very complex organ that is necessary for life. The heart is responsible for bringing oxygenated blood around the body. There are two main ways of transportation of blood around the body. The arteries go around the body and bring the oxygenated blood to various parts of the body. Once the oxygenated blood is utilized, it is brought back to the heart by the veins. The heart is broken into four major chambers that are separated by four major valves. There are two atria, which are located at the top of the heart, and two ventricles, which are located at the lower half of the heart. [5] The atria and ventricles are connected by the Mitral (bicuspid), tricuspid, pulmonary, and aortic valve. Each valve closed after the contraction to

The heart is a specialised muscle that pumps blood around the body. Blood carries oxygen and nutrients around the body and carries waste products to organs in order to be removed. The heart is divided into 2 pumps, that simultaneously work together. Blood that comes back from delivering nutrients to the organs enters the heart on the right side and is then pumped through to the lungs. Lungs will then remove the carbon dioxide, and recharge the blood with oxygen. (heartfailurematters.org. (2012, February)

The heart receives blood from veins and carries blood away through arteries to capillaries which are the site of exchange of substances. There are four chambers of the heart, right atrium, right ventricle, left atrium, and left ventricle. The basic circulation of blood is vena cava, right atrium to right ventricle, through pulmonary trunk to the lungs, from the lungs through pulmonary veins to left atrium then left ventricle out the aorta to systemic cells (McKinley, et al, 2013).