Of the step in excitation-contraction below, which occurs last?
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
Q35: During contraction of skeletal muscle fibers, the
A)
Q37: Which is not characteristic of cross bridges?
A)
Q37: The sarcoplasmic reticulum stores _ when a
Q38: Which of the following changes in banding
Q39: According to the sliding-filament mechanism of muscle
Q41: Which of the following is involved in
Q42: Which of the following is not a
Q43: Which of the following is not a
Q44: Summation
A) results from increases in cystolic calcium
Q47: A motor unit refers to
A)a single motor
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