The heart becomes efficient in the Brooke Delaney BOD- Cardio Quiz

Question 19 / 24: The heart becomes ____________ efficient in the interactions between the myofibrils in the sarcomeres and has an __________________in demand for energy. This would explain why dilaton could lead to heart failure.

A more, decrease

B more, increase

C less, increase

D less, decrease

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Explanation:

If sarcomeres are stretched, the actin / myosin interactions are compromised and finally stretched so far apart they completely dissociated and don't interact at all. This makes heart less efficient.

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BOD- Cardio Quiz

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Brooke Delaney

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