As ATP binds to the myosin head at the beginning of a muscle contraction cycle, the myosin head immediately
A) detaches from actin.
B) initiates binding with actin.
C) tightens its bond to actin.
D) swivels.
Correct Answer:
Verified
Q15: The H zone contains
A) thick filaments.
B) thin
Q16: In order for high force crossbridges to
Q17: The tension generated in a skeletal muscle
Q18: The function of transverse tubules is to
A)
Q19: The hydrolysis of ATP causes myosin to
Q21: Which fibers fatigue sooner?
A) fast-twitch fibers
B) slow-twitch
Q22: The contraction cycle is triggered by the
Q23: The action potential traveling along the t-tubule
Q24: The nervous system avoids muscle fatigue during
Q25: A motor unit consists of
A) one neuron
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