In a normal human being the heart correctly functions by the blood first entering through the right atrium from the superior and inferior vena cava. This blood flow continues through the right atrioventricular valve into the right ventricle. The right ventricle contracts forcing the pulmonary valve to open leading blood flow through the pulmonary valve and into the pulmonary trunk. Blood is then distributed from the right and left pulmonary arteries to the lungs, where carbon dioxide is unloaded and oxygen is loaded into the blood. The blood is returned from the lungs to the left
Likewise, Blood flows from the right atrium to the right ventricle, and then is pumped to the lungs to receive oxygen. From the lungs, the blood flows to the left atrium, then to the left ventricle, forming the complete circulation.
The left side of the heart, has the left atrium and ventricle that takes in oxygenated blood from the lungs and pumps it out of the aorta.
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 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 strong muscle that has one major job. The heart’s job is to pump blood throughout the entire body. The heart is made up of 4 chambers, and 4 valves. There is the right and left atrium, and a right and left ventricle. The atriums are the superior chambers, and the ventricles are inferior chambers. The left ventricle is the most important, because that is where the blood travels through to go to the aorta, and eventually the rest of the body (Taylor 2015).
The heart is composed of four chambers or rooms. The top two chambers are called atriums, and these are the collecting chambers of the heart. The bottom two chambers are called ventricles, and these are the pumping chambers of the heart.
The heart contains four chambers, the right atrium, the left atrium, the right ventricle and the left ventricle. The right atrium is located in the upper right corner of the heart, above the right ventricle whereas the left atrium which is positioned in the left side of the heart separated from the right atrium and the left atrium. The atria has a very interesting texture, it has a thin, less muscular wall and is smaller in contrast to the ventricles. The atrium is joined to the veins that transport blood out to the heart and is categorized under the four hollow chambers of the heart. The left ventricle is situated in the bottom left portion of the heart. It lies under the left atrium separated by the mitral valve while the right ventricle is located in the lower right portion of the heart below the right atrium and opposite of the left ventricle. The aorta is the largest artery in the body; it begins at the top of the left ventricle. The right pulmonary artery begins at the base of the heart’s right ventricle. The left pulmonary artery passes horizontally in front of the descending aorta and left bronchus. The heart consists of four types of valves, the tricuspid valve located between the right atrium and the left ventricle, the pulmonary valve situated between the right ventricle and the pulmonary artery, the mitral valve positioned among the left atrium and the left ventricle and finally the aortic valve located between the left ventricle and the
On the right side the flow of blood enters the heart through the inferior and superior vena cava that throws out the poor oxygen blood to the right atrium. On the left side of the heart the pulmonary veins takes action that dumps the rich oxygen blood that is coming from the lungs to the left atrium. This has both sides of the heart working together. When it comes to the atrial contraction, the right side makes the blood flow to the right atrium to the right ventricle to the tricuspid valve. Once the ventricles fill up completely, that is when the tricuspid valves shut closed. This is to prevent the blood from going backwards to the atria, making the ventricles squeeze together. The left side of the atrial contraction makes the blood flow from
De-oxygenated blood enters the heart through the Superior and Inferior Vena Cava. Oxygenated blood enters the heart from the lungs via the Pulmonary veins. Both right and left Atriums fill with blood at the same time, when they are full of blood the pressure will cause the Tricuspid valve in the right Atrium and the Bicuspid valve in the left Atrium to open and allow the blood to flow to both right and left Ventricles. Each of the Atriums will contract and force any remaining blood in to the Ventricles. Each of the Ventricles will contract (Systole) and the Atriums will relax (Diastole), pressure will then close the Tricuspid and Bicuspid valves (this is the first sound of a heart beat) The Ventricles will contract opening the Semi-Lunar valves
This valve opens to allow blood to flow from the right atrium to the right ventricle (Higgins, Roos & Ovid Technologies, 2006).
The atria are smaller than the ventricles and do not have as muscle as the ventricles. The atria are also known as the receiving chambers. They are connected to the veins that carry blood to the heart.
The process starts first with the entrance of blood into the right atrium. From the right atrium than the blood goes through the tricuspid valve to the right ventricle. Then the heart pumps the blood from the right ventricle to the pulmonary valve. From there the blood moves through the pulmonary artery and then into the capillary beds of the lungs where gas exchange occurs. From the lungs, the blood goes through the pulmonary veins to the left atrium of the heart. From the heart, the blood then goes down through the mitral valve. From the mitral valve, it flows down into the left ventricle. After that, the left ventricle pushes the blood up into the aorta. The blood then moves into arteries then back up to right atrium again then the cycle
The heart is the muscular pump that pumps blood around the body and to all the major body parts. The heart is located just to the left of your sternum. The left ventricle pumps blood through the aorta to the systemic circulation while the right ventricle pumps blood towards the lungs and rest of the body. Blood enters the heart through both of the atriums, blood goes into the right atrium via the inferior and the superior vena cava. The right side pumps deoxygenated blood in the veins in the
Blood from the left side of the mitral and tricuspid valve open flows in the right ventricle and through its ventricle.