Right Atrial Contractions

When the left atrium is filled with blood, the heart contracts and the blood passes through the bicuspid valve and into the left ventricle.

The mitral valve is located on the left side of the heart between the left atrium and left ventricle. The purpose of the mitral valve is to form a seal between these two chambers of the heart to prevent the back flow of blood. When blood enters the left side of the heart, it is oxygenated and enters through the pulmonary veins. The blood then travels through the left atrium; the bicuspid (mitral) valve then opens to let the blood flow down to the left ventricle. The left ventricle contracts, causing the mitral valve to close (preventing the backflow of blood).When the left ventricle contracts it is pumping the blood out to the remainder of the body. (Jenkins, 2007)

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

The right and left side of the heart are similar in structural components. Both sides contain a AV valve, semilunar outflow valve and smooth and muscular parts. The main difference between the two sides is size. The muscle of the left ventricles is thicker than the right side. The cavities are the same size and pump the same amount of blood. The left ventricle pumps with more power to profuse the entire body. The right ventricle profuse the lungs. The systemic resistance of the left ventricle is much higher than the pulmonary flow. The right

Blood then travels out toward the lungs for oxygenation via the pulmonary artery and returns to the heart through the pulmonary veins entering the left atrium. It is pumped through the mitral valve into the left ventricle to exit the aortic valve to the circulation via the aorta. The questions asked in the lab packet directly related to the anatomy and physiology of the heart which allowed to understand how the heart works as a

As there is a hole in the wall separating the atria, the oxygenated blood from the left atrium enters the right atrium instead of the aorta. The oxygenated blood that entered the right atrium mixes with the deoxygenated

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 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 right side of the heart brings in the circulated blood from the body and sends it to the lungs for oxygen circulation. When the left side of the heart weakens, the right side of the heart has to work harder to compensate. Again, as the heart muscle loses strength, blood and fluid become backed up in the body. The person may experience swelling and trouble catching breath. The symptoms of right sided heart failure are peripheral edema, ascites, hepatomegaly, increased jugular venous pressure, presence of a parasternal heave indicating the compensatory increase in contraction strength, congestion of the gastrointestinal tract resulting in weight loss, impaired liver

Both the right and left atrium contract causing blood to flow though the two valves, and then into the left ventricle. The left ventricle pumps blood into the systemic circulation through the aorta. This systemic circulation system is much bigger than the pulmonary circulation system, which is why the left ventricle is so big. The blood on the left side of the heart is oxygenated. It becomes oxygenated when the deoxygenated blood passes through the right atrium and then flows into the left ventricle. It is then pumped along the pulmonary artery into the lungs where it is oxygenated. It then travels through the pulmonary veins back into the heart. It enters through the left atrium and then travels to the left ventricle. This process is repeated over and over again, to make blood continuously flow through the heart, lungs and body. This process ensures that there is always enough oxygen for the body to work

Heart has 4 chambers, 2 atria and 2 ventricles. De-oxygenated blood comes back to the right side of the heart with the venous circulation, pumped into the right ventricle and then to the lungs, there, carbon dioxide is released and exchanged with oxygen. The oxygenated blood then travels back to the left side of the heart into the left atria, heading to left ventricle, aorta, and finally arterial circulation. Blood travels from right side to left side via the lungs only.

The left side of the heart delivers blood to the rest of the body, whereas the right side of the heart delivers blood to the lungs.

The similarities between the right and left sides of the heart are that both sides contain one atria and one ventricle and are both made up of strong cardiac muscle. They each also have strong cardiac muscles with the left side of the heart being thicker than the right to give it the ability to push the blood throughout the circulatory system

The inside of the heart is separated into four chambers, the left and right atria and the left and right ventricles. The ventricles hold responsibility for pumping blood around the body and they are the thickest muscle of the heart. The two atria form the curved top of the heart and the ventricles join at the bottom of the heart to create a pointed base which is directed towards the left side of the chest. The left ventricle contracts most forcefully, in order for the heart beat to be felt most strongly on the left side of the chest. A wall, known as the septum, divides the right and left sides of the heart and a valve connects each atrium to the ventricle below it. The mitral or bicuspid valve connects the left atrium with the left ventricle. The tricuspid valve connects the right atrium with the right ventricle.

The blood returning from the lungs, enters into the right side of the heart, then pumps all around the body. This process helps to ensure that adequate oxygen and nutrients are getting throughout the body and that everything is working