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Stretching Cardiac Muscle Results in an Increase in the Force

Question 1

Multiple Choice

Stretching cardiac muscle results in an increase in the force of contraction as a result of:


A) Activation of K+ channels.
B) An increase in the sensitivity of actin-myosin interactions to Ca++.
C) Phosphorylation of the ryanodine receptor.
D) Increased phosphorylation of troponin I.
E) Increased Ca++ influx through the Na+-Ca++ antiporter.

Correct Answer:

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