Author Question: The pulmonary arterial circulation does which of the following? 1. Delivers oxygenated blood back to ... (Read 129 times)

asan beg · **on:** Jul 16, 2018

The pulmonary arterial circulation does which of the following? 1. Delivers oxygenated blood back to the heart. 2. Delivers deoxygenated blood to the lungs. 3. Originates on the left side of the heart. 4. Originates on the right side of the heart.

a. 1 and 4 only
b. 2 and 4 only
c. 1 and 3 only
d. 2 and 3 only

Question 2

The pulmonary venous circulation does which of the following? 1. Delivers oxygenated blood back to the heart. 2. Delivers deoxygenated blood to the lungs. 3. Empties into the left atrium. 4. Empties into the right atrium.

a. 2 and 3 only
b. 1 and 4 only
c. 2 and 4 only
d. 1 and 3 only

aliotak · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: B
The pulmonary circulation arises from the right heart (Figure 9-30) and carries the entire cardiac output through the lung each minute. O2-reduced systemic venous blood returns to the right heart via the inferior and superior venae cavae. This blood is pumped to the lungs by the right ventricle through the pulmonic semilunar valve and on to the trunk of the pulmonary artery.

Answer to Question 2

ANS: D
The pulmonary venous system drains the capillary beds that have received O2 from the alveoli and delivers the oxygenated blood into the left atrium.