VERIFIED ANSWERS
◉ Which of the following variables is N OT involved in determining
ventricular preload?
A) filling time
B) venous return
C) atrial pressure
D) central venous pressure
E) afterload. Answer: E
◉ A decrease in afterload will lead to which of the following?
A) increased heart rate
B) increased stroke volume
C) decreased stroke volume
D) decreased heart rate
E) decreased cardiac output. Answer: B
◉ Which of the following decreases heart rate?
A) increase in parasympathetic activity
B) increase in venous pressure
, C) increase in filling time
D) increase in stroke volume
E) increase in sympathetic activity. Answer: A
◉ Which heart structure receives deoxygenated blood from veins?
A) right atrium
B) left ventricle
C) left atrium
D) right ventricle
E) AV bundle (bundle of His). Answer: A
◉ Which heart structure receives blood from the pulmonary veins?
A) right atrium
B) left ventricle
C) left atrium
D) right ventricle
E) AV bundle (bundle of His). Answer: C
◉ Where is the SA node located?
A) right atrium
B) left ventricle
C) left atrium