Question

the coronary arteries exit from the ______ and divide into branches. pulmonary valve aortic valve aorta cardiac muscle

Explanation:

The coronary arteries originate from the aorta. The pulmonary valve is related to the pulmonary circulation. The aortic valve is a heart valve but not the origin of coronary arteries. Cardiac muscle is the tissue of the heart, not the source of coronary arteries.

Answer:

aorta