alleryStart learning →Which principle links ventricular stretch to the force of contraction?
AThe Frank-Starling mechanism
BThe Bainbridge reflex loop
CThe Bohr shift principle
DThe Laplace wall law
Answer & Solution
Correct answer: A. The Frank-Starling mechanism
1. Greater filling stretches the ventricular muscle before it contracts.
2. The relationship between ventricular stretch and contraction is the Frank-Starling mechanism.
3. It explains why a rise in preload raises the force of the next beat.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.4 | Cardiac Physiology_
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