Sequence the following events that occur during muscle cont…

Biology Locomotion and Movement Skill Builder Single Correct MCQ

Published on: August 21, 2026

Sequence the following events that occur during muscle contraction according to the sliding filament theory:

ATP hydrolysis by the myosin head
- - -

Cross-bridge formation between actin and myosin
- -

Calcium binds to troponin, exposing the active sites on actin
- (E)- - -

Signal from CNS reaches the neuromuscular junction
(E) Release of neurotransmitter (Acetylcholine) Choose the correct sequence of events from the options given below: -(E)- -(E)- - (E)- -

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The sequence starts with a neural signal from the CNS reaching the neuromuscular junction, followed by the release of Acetylcholine. This triggers a series of events leading to the exposure of active sites on actin through calcium binding to troponin. Subsequently, ATP is hydrolyzed by the myosin head facilitating the cross-bridge formation with actin.

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