Multiple Choice
Figure 20-2 Cardiac Cycle
Use Figure 20-2 to answer the following question:
-What is occurring in the left atrium at the circle labeled "2" on the graph?
A) left atrium is pressurizing the left ventricle
B) left atrium is in systole
C) left atrial pressure is decreasing
D) left atrium is in diastole
E) left atrium is receiving pressure from the left ventricle
Correct Answer:

Verified
Correct Answer:
Verified
Q25: Abnormally slow depolarization of the ventricles would
Q26: Calculate cardiac output if the heart rate
Q44: The long plateau phase of the cardiac
Q64: Stroke volume depends on<br>A)end diastolic volume.<br>B)the contractility
Q65: If the pacemaker cells in the SA
Q66: Pacemaker cells isolated from the SA node
Q68: Drugs that block the beta-one adrenergic receptors
Q72: The marginal branch and posterior interventricular branch
Q141: _ is when the heart can't maintain
Q143: A faster-than-normal heart rate is called _.