As stated by the Frank-Starling law, there is a direct relationship between the _____ of the blood in the heart at the end of diastole and the _____ of contraction during the next systole
a. pressure; duration
b. volume; force
c. viscosity; force
d. viscosity; duration
ANS: B
The Frank-Starling law of the heart describes the length-tension relationship of ventricular end-diastolic volume (VEDV) (preload) to myocardial contractility (as measured by stroke vol-ume). It does not refer to duration, pressure, or viscosity.
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