Article overview aorta
- The central vessel
- Section of the aorta
- Structure of the aorta
- The tasks of the aorta
- Diseases of the main artery
The central vessel
The aorta in adults is about 35 to 40 centimeters long and with a diameter of about three centimeters the thickest vessel in the body. It goes directly from the left ventricle and directs the blood from the heart into the systemic circulation (large blood circulation) - calmly flow about five liters of blood per minute through the main artery, under effort up to 30 liters. Between the left ventricle and the aorta sits the aortic valve, one of the four heart valves, which prevents a return flow of the blood.Properly measuring blood pressure. High blood pressure can be dangerous. See here how you can measure the values yourself. High blood pressure can be dangerous. See here how you can measure the values yourself. To the table of contents
Section of the aorta
The main artery can be roughly divided into the following sections:
The first section, which goes from the left ventricle, is ascending and is called the ascending aorta. It lies within the pericardium and has two branches - the two coronary arteries that supply the heart muscle.
With the passage through the pericardium, the second section of the main artery begins: It makes an arc (aortic arch, aortic artery) up and obliquely to the left rear. From the aortic arch three main branches go off, which supply with their further branches head, neck and arms.
The aortic arch is followed by the descending portion of the main artery, the descending aorta. It runs first in the chest (then called chest aorta) and then - after passing through the diaphragm - in the abdominal cavity (then called abdominal aorta). The branches of the thoracic aorta supply the lungs, chest wall and adjacent breast tissues. The branches of the abdominal aorta supply the abdominal organs.
At the lower end, the aorta divides into the two large iliac arteries, which supply the pelvis and legs with their branches.