Multiple Choice
Of the steps in excitation-contraction below, which step occurs before the others?
A) Exposed actin sites bind with myosin cross bridges.
B) Sodium channels open in the fiber's membrane.
C) Calcium is released from the sarcoplasmic reticulum.
D) Troponin binds calcium.
E) Attachment of ATP allows for cross bridge detachment.
Correct Answer:
Verified
Correct Answer:
Verified
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