Biology, 05.05.2020 05:00 sunshine52577oyeor9

Sequence the events that take place when a motor neuron's action potential triggers a muscle contraction.
a) The motor neuron's action potential arrives at the neuromuscular junction.
b) Myosin cross‑bridges attach to actin fibers.
c) The muscle fiber's plasma membrane depolarizes in response to the arrival of acetylcholine.
d) Calcium ions bind to troponin, which changes the conformation of the tropomyosin so the actin-binding sites are exposed.
e) The sarcoplasmic reticulum becomes more permeable in response to the action potential, causing a release of calcium ions.
f) The action potential moves throughout the muscle fiber along transverse (T) tubules.

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