Question

question 1 of 10
which of the following steps in blood flow is part of the pulmonary circuit and not the systemic circuit?
oxygen poor blood flows from the right ventricle into the pulmonary trunk and then the pulmonary arteries.
oxygen rich blood flows through the coronary arteries to oxygenate heart muscle.
oxygen rich blood leaves the heart from the left ventricle through the aortic valve.
oxygen poor blood returns to the right atrium of the heart via the ivc, svc and coronary sinuses.

Explanation:

The pulmonary circuit involves the movement of de - oxygenated (oxygen - poor) blood from the right ventricle to the lungs via the pulmonary trunk and arteries for oxygenation. The systemic circuit distributes oxygen - rich blood from the left ventricle to the body. The statement about oxygen - poor blood flowing from the right ventricle into the pulmonary trunk and then the pulmonary arteries is specific to the pulmonary circuit. The other options are related to the systemic circuit or other aspects of blood flow not part of the pulmonary circuit.

Answer:

Oxygen poor blood flows from the right ventricle into the pulmonary trunk and then the pulmonary arteries.