The aorta is a large blood vessel that branches off from the heart and pumps oxygen-rich blood back into the body. The aorta carries blood away from the left ventricle and circulates it into the systemic circuit. The systemic circuit are the vessels between the aortic semilunar valve and the entrance to the right atrium.Continue Reading
Oxygenated blood enters the body through capillary networks surrounding the alveoli of the lungs. Alveoli, air-filled pockets with barriers thin enough to allow oxygen to pass through, oxygenate the blood depleted of oxygen and absorb carbon dioxide for expulsion through the lungs. An exchange occurs at the alveoli, which transfers fresh oxygen from the lungs to the blood and carbon dioxide from the blood to the alveoli. The function of the aorta is to pump this new oxygen-rich blood from the left ventricle of the heart, where the oxygenated blood is deposited, and circulate it back into the body.
The shape of the aorta assists with blood circulation. It has four main sections: the ascending aorta, the aortic arch, the descending thoracic aorta and the abdominal aorta. The ascending aorta begins at the semilunar valve of the left ventricle and connects to the coronary arteries. The aortic arch curves like a cane and connects the ascending aorta and descending aorta. The descending aorta is a continuation of the aortic arch and is divided into the two sections: the thoracic aorta and the abdominal aorta.Learn more about Human Anatomy
The thoracic cavity protects and holds the lungs, heart, trachea, esophagus, endocrine glands, thoracic aorta and the pulmonary artery. Enclosed by the ribs, breast bone and vertebral column, it is the second-largest hollow space of the human body.Full Answer >
The aorta is an artery that originates from the heart, beginning at the top of the left ventricle. The heart pumps blood from the left ventricle into the aorta by way of the aortic valve.Full Answer >
A small heart or aortic aneurysm, which is a bulge that develops on the wall of the aorta, can be treated with medications like beta-blockers and calcium channel blockers for underlying causes of the problem that can include hypertension or blood vessel problems, relates the National Heart, Lung, and Blood Institute. This can prevent the aneurysm from growing larger and possibly rupturing. However, an aneurysm that is 2 inches or greater in size can require surgery to avoid a rupture, states the National Heart, Lung, and Blood Institute.Full Answer >
The mitral valve uses flaps to prevent blood from flowing backward from the left ventricle to the left atrium of the heart between pumps. It is one of four valves in the heart that regulate the blood flow in the system.Full Answer >