1) Cardiac output increases during exercise due to an increase in both heart rate and stroke...

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Medical Sciences

1) Cardiac output increases during exercise due to an increasein both heart rate and stroke volume. Which of the followingcontribute to this increase in stroke volume? (Select all thatapply).
a) Constriction of veins by the sympathetic nervous system
b) The increase in heart rate directly increases fillingtime
c) Increased stretching of the cardiac myocytes due to increasedEDV
d) Increased sympathetic stimulation of the ventricles
e) Withdrawn (decreased) parasympathetic stimulation of theventricles
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2) Which parameter is primarily responsible for the differencesin MAP observed between dynamic and static exercise?

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3.6 Ratings (633 Votes)

Stroke volume is the blood that is ejected from each ventricleThis happens due to the contraction of muscles in heart compressing the ventriclesThis is calculated by the diffrence between the end diastolic volume and end systolic volumeEnd diastolic volume is volume of blood prior to contraction of muscles in heart and end systolic volume is volume of blood remaining in ventricle after the ejection of See Answer

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