The ________ phase of muscle contractions occurs as AChE inactivates ACh and calcium ions are returned to the sarcoplasmic reticulum.
A) relaxation
B) latent period
C) contraction phase
D) myogram

Question

Quizplus · Accepted Answer

The relaxation phase occurs as AChE (acetylcholinesterase) inactivates ACh (acetylcholine) and calcium ions are returned to the sarcoplasmic reticulum. This marks the end of muscle contraction for that particular muscle fiber. The latent period is the time it takes for the muscle to respond to the stimulus, the contraction phase is when the muscle is actively contracting, and a myogram is a graphic representation of muscle contractions.

The ________ Phase of Muscle Contractions Occurs as AChE Inactivates