The Heart Wall

Based on the external observation, the left side of the heart appeared bigger than the right side. When looking at the heart internally, the right ventricle pumps the blood to the lungs, and the left ventricle to the rest of the body. Therefore the left ventricle needs to be stronger and bigger, than the right ventricle, as it has a larger role in the functioning the heart.

The heart is divided into four chambers, upper left, upper right atrias, lower left and lower right ventricles. The right atrium and ventricle are called the right hearts and the left as the left hearts.  The heart is enclosed in a protective sac, the pericardium, which contains a small amount of fluid. There are

The cardiovascular system, however, would not be able to effectively complete these functions without help from what is sometimes referred to as the body’s hardest-working organ- the heart. Approximately the size of a fist, the heart is contains four chambers (the uppermost are called the atria and the lowermost are called the ventricles) and four valves. Additionally, the heart is surrounded by the pericardium, a structure that serves to protect the heart, keep the heart stabilized in the chest, and

The heart is basically a pump that has to circulate the blood around the body delivering oxygenated blood to our organs and then returning deoxygenated blood to our lungs. There are four chambers in the heart, two atria and two ventricles. There are four main valves, mitral, aortic, tricuspid and pulmonary7b.

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).

You have four chambers in your heart. Two atria in the upper half of the heart and two ventricles

I was able to observe each of the atriums and ventricles, along with the aorta and valves. I compared the left and the right side, seeing how they are different in size along with different valves and muscles. With looking at the heart I labeled all different parts those including, right atrium, right ventricle, left atrium, left ventricle, tricuspid valve, aorta, aortic valve, papillary muscle, septum, and bicuspid valve.

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

The heart chambers have four valves categorized as atrioventricular or semilunar valves (Elisha, 2014). The atrioventricular valves include the tricuspid and mitral valves (Elisha, 2014). The semilunar valves include the aortic and pulmonary valves (Elisha, 2014). The tricuspid valve, located within the right atrioventricular orifice, lies between the right atrium (RA) and the right ventricle (RV) (Elisha, 2014). The mitral valve situated in the left atrioventricular orifice between the left atrium (LA) and left

Atria: The heart is divided into four chambers that are connected by heart valves, the upper two heart chambers are called atria.

The upper part of the heart is made up of the other two chambers of the heart, the right and left atria. The right and left atria receive the blood entering the heart. A wall called the interatrial septum divide the right and left atria, which are separated from the ventricles by the atrioventricular valves. The tricuspid valve separates the right atrium from the left ventricle, and the mitral valve separates the left atrium and left ventricle (KidsHealth 2016).The upper part of the heart is made up of the other two chambers of the heart, the right and left atria. The right and left atria receive the blood entering the heart. A wall called the interatrial septum divide the right and left atria, which are separated from the ventricles by the

The left ventricle’s pumping capacity is controlled by the heart’s conduction system which is regulated by the nervous system. This conduction system is a series of electrical impulses that begin in the right atrium with the sinoatrial (SA) node and cause the right and left atria to contract first. This electrical impulse then travel by way of special tissue to the atrioventricular (AV) node, which is located between the atria and the ventricles. At the AV node the electrical impulse pauses very briefly to allow the ventricles to fill with blood. After the pause, the electrical impulse travels through the bundle of his and through right and left bundles that branch into the right and left ventricles respectively. These bundles branch into the Purkinje fibers which are attached to the cells in the walls of the ventricles. The electrical impulses move across the cells on the walls of the ventricles; thus signaling the ventricles to contract with the left

The right side of the heart consists of the right atrium and right ventricle. The right atrium receives the deoxygenated blood via the vena cava (both the inferior and superior) from the rest of the body. The blood then travels through the tricuspid valve into the right ventricle where it then gets pumped to the lungs, where gas exchange can occur. The chambers on the left side of the heart are the left ventricle and atrium. The left atrium receives the oxygenated blood from the lungs via the pulmonary vein. It is then pumped through the atrioventricular valve into the left ventricle, where it is pumped through the aorta and to the rest of the body. One adaptation of the heart is the thickness of the walls. The ventricles have thicker walls than the atria as blood gets pumped out with higher pressures. The left ventricle is even thicker as it must withstand the

There are three layers that are important to the function of the heart these include Fibrous pericardium, parietal pericardium and visceral pericardium. Fibrous pericardium is the outer sac that protects and covers the heart. It keeps the heart in the chest cavity. It also protects the heart from infections and the chance of them spreading into other organs. The particle pericardium insulates the heart. The visceral pericardium is the inner layer that provides pericardial fluid. This is helpful with providing lubrication of the membrane and all the other layers.

The right atrium (RA) is the first of four chambers the blood is pumped through. It is located