Question

The pulmonary artery carries
A) Deoxygenated blood to the lungs
B) Oxygenated blood to the brain
C) Oxygenated blood to the lungs
D) Deoxygenated blood to the kidney

Answer 1

Hint:This artery divides above the heart into two branches, to the right and left lungs, where the arteries further subdivide into smaller and smaller branches until the capillaries in the pulmonary air sacs (alveoli) are reached.The word “pulmonary” relates to the lungs.

Complete answer:
The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs. The blood here passes through capillaries adjacent to alveoli and becomes oxygenated as part of the process of respiration.
The largest pulmonary artery is the main pulmonary artery or pulmonary trunk. There, it is replenished with inhaled oxygen and excess carbon dioxide is "dropped off" to be released from the body via exhalation.
The pulmonary trunk and the left and right pulmonary arteries are relatively large arteries. They are each shaped like tubes with a lumen (the opening through which blood flows). The left and right pulmonary arteries send blood to the left and right lungs, respectively.
The location of the right artery is such that it wedges in the aortic arch, behind the ascending aorta and in front of the descending aorta. The left pulmonary artery extends near the left side of the aorta. After the left pulmonary artery enters the left lung, it divides into smaller branches.
The right pulmonary artery goes across the upper chest to enter the right lung. After this point, this artery divides into smaller branches.

Additional information:The pulmonary artery pressure (short - PA pressure) is a measure of the blood pressure found in the main pulmonary artery. The mean pressure is typically 9 - 18 mmHg, and the wedge pressure measured in the left atrium may be 6-12mmHg.

Thus, the correct answer is option A (Deoxygenated blood to the lungs).

Note:The main pulmonary arteries emerge from the right side of the heart, and these split into smaller arteries that progressively divide and become smaller until they become arterioles and eventually capillaries.