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The Muscle Action Potential Quickly Spreads into the Muscle Fiber

Question 82

Multiple Choice

The muscle action potential quickly spreads into the muscle fiber as it travels along the _____, which is an extension of the _____.

A) myofibril; sarcoplasm
B) myofibril; sarcoplasmic reticulum
C) transverse tubules; sarcolemma
D) transverse tubules; sarcoplasm

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