Author Question: The most common cause of myocardial ischemia is: a. idiopathic vasospasm. b. arterial emboli ... (Read 47 times)

james0929 · **on:** Jun 25, 2018

The most common cause of myocardial ischemia is:

a. idiopathic vasospasm.
b. arterial emboli from a heart valve.
c. atherosclerosis.
d. venous emboli.

Question 2

Foam cells in a fatty streak are:

a. deposited adipose cells.
b. injured neutrophils.
c. macrophages that engulf low-density lipo-protein (LDL).
d. lipid-laden mast cells.

amcvicar · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

ANS: C
The most common cause of myocardial ischemia is atherosclerosis. Myocardial ischemia is not caused by idiopathic vasospams or venous emboli. Arterial emboli may cause ischemia, but ath-erosclerosis is the major cause of myocardial ischemia.

Answer to Question 2

ANS: C
Foam cells are lipid-laden macrophages that engulf LDL. They are deposited in vessels, not adi-pose cells. Foam cells are not injured neutrophils nor are they mast cells.