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Medicine, 20.07.2019 02:30 jennyferluna0216

The coupling of muscle excitation & muscle contraction involves the 2nd physiologic event. this process is best described by which of the following?
a) an action potential propagates along the motor axon innervating the muscle fiber.
b) the synaptic end bulb releases a neurotransmitter, causing the muscle to contract.
c) ca2+ channels, stimulated by depolarizing t-tubules, open and release ca2+ ions to the sarcoplasm.
d) crossbridge cycling & muscle contraction.

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