Myocardial infarction refers to:
A) mitral valve involvement. B) a heart attack.
C) coronary artery blockage. D) both B and C.
Question 2
Heart valves:
A) close off the blood supply to organs of the body.
B) regulate the gas exchange in the body.
C) provide pressure that forces blood through the body.
D) separate the chambers in the heart from the vessels leaving the heart.