๐Ÿงฌap biology review

Muscle contraction

Written by the Fiveable Content Team โ€ข Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated August 2025

Definition

The physiological response triggered when acetylcholine binds to acetylcholine receptors at the neuromuscular junction, causing muscle fibers to shorten.

AP course connection

Topic 4.1: 4.1 Cell Communication

Unit 4

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Muscle contraction Definition for AP Biology | Fiveable