Question

In the coronary circuit, the myocardium performs the coordinated contractions that pump blood out of the ventricles. These contractions are the?

coronary arteries.
heart rate.
heartbeat.
aorta.

Answer 1

d

Step-by-step explanation:

Answer 2

Myocardium is the muscle layer of the heart. It is found in the walls of all four chambers of the heart. It is thicker in the ventricles and thinner in the atria.

Step-by-step explanation:

Remember - make a V with your fingers - Veins go to the heart - up

Make an A with your fingers - Arteries go away from the heart - down