Cardiac Muscle Mechanics Flashcards by Jorge Araujo | Brainscape

Q

What affects the systolic and diastolic intervals?

A

systolic interval decreased: contractility effect

- diastolic interval decreased: heart rate effect

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Q

What is the Bowditch effect? What does it lead?

A

When ⬆️ heart rate ▶️ small ⬆️ contractility: Ca enter more rapidly than is sequestered ▶️ ⬆️ Ca
help to compensate the reduced filling cause by ⬆️ HR

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Q

Endogenous what can increase the contractility?

A

norepinephrine and epinephrine: B1 receptor sympathetic

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