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HPHP EXAM 1 PRACTICE QUIZES QUESTIONS WITH 100% CORRECT ANSWERS!!
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HPHP EXAM 1 PRACTICE QUIZES QUESTIONS WITH 100% CORRECT ANSWERS!!
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HPHP EXAM 1 PRACTICE QUIZES QUESTIONSWITH 100% CORRECT ANSWERS!!
the heart pumps how many liters of blood/min at rest? Answer - 5
liters/minute
what is the inner most layer of the heart? Answer - endocardium
functions of the cardiopulmonary system include Answer - 1. delivery of
oxygen
2. removal of CO2
3. regulation of temperature
when the AV valve opens, approximately 70% of blood flows to ventricles. how
does the remaining blood get to the ventricles? Answer - contraction of the
atria
differences between cardiac and skeletal muscle Answer - involuntary
contraction, intercalated discs,
a patients heart pumps approximately 5 liters of blood/min at rest. During
maximal high intensity exercise, what would you expect their CO to be>?
Answer - 4-5 times more than the resting CO
your patient has tricuspid valve stenosis. this causes blood to back up in the
______ Answer - right atrium
, your patient has hypertension. your patient may be prescribed a ______ to
decrease BP Answer - a class of drugs called vasodilators, diuretics,
angiotensin-converting enzyme inhibitor
vasodilation in the blood vessels of active muscles results in a decrease in
which of the following during acute aerobic exercise? Answer - total peripheral
resistance
(t/f) cardiac output increases in direct proportion to oxygen uptake. in regards
to studying a trained vs. untrained subject, the untrained subject would be
more likely to have a CO up to 40 L/min. Answer - false, 40 L/min CO would be
more likely in TRAINED subject
venous return is regulated during exercise by Answer - vasoconstriction,
muscle pumps, and respiratory pump
select the innapropriate resposne in regards to normal mean arterial pressure
changes during acute aerobic exercise.
a. ^ MAP due to decreased CO and ^ TPR
b.^MAP due to ^CO and decreased TPR
c. decreased MAP due to decreased CO and ^TPR
d. decreased MAP due to ^CO and decreased TPR Answer - b. increased MAP
due to increased cardiac output and decreased total peripheral resistence
acute regulation of BP is maintained via SNS by help of baroreceptors in the
aortic carotid arteries. these receptors signal CVCC in the medulla oblongata
which in return adjust the SNS activity. if BP is low, all of the following occur.
Answer - 1. vasoconstriction of peripheral vessels
2. an increase in SNS activity
3. increase in HR and contractility
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