What term is used to describe the premise that increased ventricular filling improves contractile force of the heart as a result of greater stretch of cardiac fibers

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19-11-2021
Biology

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What term is used to describe the premise that increased ventricular filling improves contractile force of the heart as a result of greater stretch of cardiac fibers

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genewho genewho · Answer 1 · 2021-11-30T10:54:06+01:00

Frank – Starling law is used to describe the premise that increased ventricular filling improves contractile force of the heart as a result of greater stretch of cardiac fibers.

According to the Frank – Starling law, the more the heart muscle is stretched during filling, the greater the contractile force and the greater the amount of blood pumped into the aorta are, as well as the ejection pressure.

This is because there is a relationship between cardiac fiber length (equivalent to end-diastolic volume) and force of contraction (equivalent to stroke volume).

When an extra amount of blood reaches the heart, the heart muscle stretches more and is able to contract with greater force.

Therefore, we can conclude that Frank – Starling law is used to describe the premise that increased ventricular filling improves contractile force of the heart as a result of greater stretch of cardiac fibers.

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