PNP301 test 3 - practice questions with
correct answers
MaintainS CO when SV decreases - CORRECT ANSWER✔✔-increased HR
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Causes AV nodes to close - CORRECT ANSWER✔✔-increased intraventricular
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pressure
"It is a potential space containing a very small amount of serous fluid." - CORRECT
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ANSWER✔✔-pericardial cavity
| |
Which of the following factors greatly improves venous return to the heart during
| | | | | | | | | | | |
strenuous exercise?
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a. Rapid emptying of the right side of the heart
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b. Forceful action of the valves in the veins
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c. Contraction and relaxation of skeletal muscle
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d. Peristalsis in the large veins - CORRECT ANSWER✔✔-C. contraction &
| | | | | | | | | | |
relaxation of Sk. muscle | | |
"signal the cardiovascular control center of changes in systemic blood pressure." -
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CORRECT ANSWER✔✔-Baroreceptors
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, The normal delay in conduction through the AV node is essential for__________ -
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CORRECT ANSWER✔✔-completing ventricular filling
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Which of the following is a result of increased secretion of epinephrine?
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a. Increased heart rate and force of contraction
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b. Decreased stimulation of the SA node and ventricles
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c. Vasoconstriction in skeletal muscles and kidneys
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d. Vasodilation of cutaneous blood vessels - CORRECT ANSWER✔✔-A. increased
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HR + force of contraction
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Which of the following causes increased heart rate?
| | | | | | |
a. Stimulation of the vagus nerve
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b. Increased renin secretion
| | |
c. Administration of beta-blocking drugs
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d. Stimulation of the sympathetic nervous system - CORRECT ANSWER✔✔-D.
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stimulation of the SNS | | |
causes the QRS wave on an electrocardiogram (ECG) - CORRECT ANSWER✔✔-
| | | | | | | | | |
Ventricular DEpolarization |
The cardiac reserve is? - CORRECT ANSWER✔✔-the ability of the heart to
| | | | | | | | | | | |
increase cardiac output when needed
| | | |
what is "Preload"? - CORRECT ANSWER✔✔-volume of venous return
| | | | | | | |
correct answers
MaintainS CO when SV decreases - CORRECT ANSWER✔✔-increased HR
| | | | | | | |
Causes AV nodes to close - CORRECT ANSWER✔✔-increased intraventricular
| | | | | | | | |
pressure
"It is a potential space containing a very small amount of serous fluid." - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-pericardial cavity
| |
Which of the following factors greatly improves venous return to the heart during
| | | | | | | | | | | |
strenuous exercise?
| |
a. Rapid emptying of the right side of the heart
| | | | | | | | |
b. Forceful action of the valves in the veins
| | | | | | | |
c. Contraction and relaxation of skeletal muscle
| | | | | |
d. Peristalsis in the large veins - CORRECT ANSWER✔✔-C. contraction &
| | | | | | | | | | |
relaxation of Sk. muscle | | |
"signal the cardiovascular control center of changes in systemic blood pressure." -
| | | | | | | | | | |
CORRECT ANSWER✔✔-Baroreceptors
| |
, The normal delay in conduction through the AV node is essential for__________ -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-completing ventricular filling
| | | |
Which of the following is a result of increased secretion of epinephrine?
| | | | | | | | | | |
a. Increased heart rate and force of contraction
| | | | | | |
b. Decreased stimulation of the SA node and ventricles
| | | | | | | |
c. Vasoconstriction in skeletal muscles and kidneys
| | | | | |
d. Vasodilation of cutaneous blood vessels - CORRECT ANSWER✔✔-A. increased
| | | | | | | | | |
HR + force of contraction
| | | |
Which of the following causes increased heart rate?
| | | | | | |
a. Stimulation of the vagus nerve
| | | | |
b. Increased renin secretion
| | |
c. Administration of beta-blocking drugs
| | | |
d. Stimulation of the sympathetic nervous system - CORRECT ANSWER✔✔-D.
| | | | | | | | | |
stimulation of the SNS | | |
causes the QRS wave on an electrocardiogram (ECG) - CORRECT ANSWER✔✔-
| | | | | | | | | |
Ventricular DEpolarization |
The cardiac reserve is? - CORRECT ANSWER✔✔-the ability of the heart to
| | | | | | | | | | | |
increase cardiac output when needed
| | | |
what is "Preload"? - CORRECT ANSWER✔✔-volume of venous return
| | | | | | | |
