What does the depolarization of the transverse tubules (T-tubules) promote?
A) release of calcium from the sarcoplasmic reticulum
B) entry of sodium ions into the muscle fiber through voltage-gated sodium ion channels
C) release of acetylcholine from vesicles in the motor neuron into the synaptic cleft
D) binding of acetylcholine to ligand-gated sodium ion channels
Correct Answer:
Verified
Q22: What are possible products of glycolytic,or anaerobic,catabolism?
A)glucose
Q23: The synapse of a motor neuron with
Q24: Where are receptors for acetylcholine located?
A)sarcomere
B)triad
C)motor end
Q25: Through which ATP-generating mechanism can long-lasting muscle
Q26: Once excitation-contraction coupling has occurred,calcium ion concentration
Q28: During muscle contraction,myosin crossbridges bind to active
Q29: A pathway of ATP production that results
Q30: Which statement best describes the function of
Q31: The binding of a myosin head to
Q32: What is required for excitation-contraction coupling?
A)calcium ions
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