Multiple Choice
The first heart sound is heard when the
A) AV valves open.
B) AV valves close.
C) semilunar valves close.
D) atria contract.
E) blood enters the aorta.
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q3: The term used to describe fluid collecting
Q27: Coronary veins empty into the<br>A) left atrium.<br>B)
Q30: The _ is shared by the two
Q31: Which of the following would increase heart
Q35: The connective tissue fibers of the myocardium<br>A)add
Q36: Cardiac cells damaged by infarction will show
Q36: The following are structural components of the
Q81: Apatient's ECG recording shows a very long
Q98: Depolarization of the atria corresponds to the
Q133: In the middle of the thoracic cavity