The muscle action potential will cause the sarcoplasmic reticulum to release calcium ions when stimulated directly by the

Question

Quizplus · Accepted Answer

The T tubule is an extension of the sarcolemma that penetrates deep into the muscle fiber. When a muscle action potential travels down the T tubule, it triggers the sarcoplasmic reticulum to release calcium ions, which then bind to the protein troponin, leading to the contraction of the muscle fiber.

The Muscle Action Potential Will Cause the Sarcoplasmic Reticulum to Release