Pulmonary And Systemic Heart

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.

R E V I E W S H E E T 30 Anatomy of the Heart

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

The heart has four valves which each play an important role in healthy circulation. The four valves in order of circulation are tricuspid valve, pulmonary valve, mitral valve, and aortic valve. Each chamber of the heart has a valve that must fully open to allow blood to pass through to its next destination and close tightly when the blood is done passing, to prevent backflow.

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.

Three different layers work together to form the heart. These are the pericardium, myocardium, and endocardium. The outermost layer is the pericardium, and it is formed of and additional two layers. In the middle

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 human heart is kept well protected by a sac and fluid that cushions it. The sac that the heart is housed in is called the pericardium. Inside the walls of this sac is pericardial fluid, and this fluid is responsible for cushioning the heart. There are three layers that the walls of the human heart are made up of. The wall that is closest to the heart is called the endocardium, and this is the portion that is in contact with the blood. The middle wall is called

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.

Heart= The heart is around the size of a persons fist, it is composed of 2 sides and four chambers, the left and right atria and the left and right ventricles. The atria’s are at the top of the heart, they receive blood from various parts of the body. The two ventricles are located on the bottom of the heart and pump blood away from the heart. The right ventricles responsibility is to pump the deoxygenated blood to the lungs, while the left ventricle pumps the oxygenated blood to the rest of the body. Between the chambers there are valves in the heart, the valves control the flow of blood, making sure it flows in one direction.

To have a properly functioning heart, all four of the heart's chambers must receive the beat signal in the proper sequence. The chambers are divided into the right atrium and ventricle and the left atrium and ventricle. The pair on the right side of the heart pumps oxygen-depleted blood coming back from the rest of the body into the lungs for fresh oxygen. The pair on the left side moves freshly oxygenated blood returning from the lungs to the many organs of the body.

1. Heart is a hollow muscular organ located between the lungs in the mediastinum and pumps oxygenated blood to all parts of the body. Heart is present in the pericardial sac and has four chambers namely right atrium, right ventricle, left atrium and left ventricle and is separated into left and right side by a muscular wall called septum. Interatrial septum separates the two atria and interventricular septum separates two ventricles. The heart wall has three layers epicardium, myocardium and endocardium. Two large veins such as superior vena cava and inferior vena cava open in right atrium. Atria are superior, and ventricles are located inferiorly. Two atrioventricular valves namely tricuspid valve and mitral valve(bicuspid) and two semilunar

The basic anatomy of the heart is that the heart has four chambers, two atria and two ventricles. While that is common knowledge, the heart is much more complicated than that. The heart is encased in a fluid-filled cavity known as the pericardial cavity. The pericardial cavity walls and lining are made of pericardium. “Pericardium is a type of serous membrane that produces serous fluid to lubricate

The heart is divided in half by the septum and has four chambers; right and left atria’s and the right and left ventricles. The heart also has four values to ensure the blood flows throughout the chambers properly these are called the; tricuspid valve, mitral valve, pulmonary valve and the aortic valve. All of those are surrounded by the thick wall of the heart with three layers. The endocardium is the inner smooth layer surrounding each chamber. The myocardium is the thick muscular middle layer, the muscular wall of this layer allows the heart to contract and pump the blood. The epicardium layer is the outer layer of the heart.

In the human body, the heart is usually situated in the middle of the thorax with the largest part of the heart slightly offset to the left, although sometimes it is on the right, underneath the sternum. The heart is usually felt to be on the left side because the left heart is stronger . The left lung is smaller than the right lung because the heart occupies more of the left hemithorax. The heart is fed by the coronary circulation and is enclosed by a sac known as the pericardium; it is also surrounded by the lungs. The pericardium comprises two parts: the fibrous pericardium, made of dense fibrous connective tissue, and a double membrane structure containing a serous fluid to reduce friction during heart contractions. The heart is located in the mediastinum, which is the central sub-division of the thoracic cavity. The mediastinum also contains other structures, such as the esophagus and trachea, and is flanked on either side by the right and left pulmonary cavities; these cavities house the lungs.