Ca++ will be released from the sarcoplasmic reticulum when

SKELETAL MUSCLE

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	the action potential reaches the neuromuscular junction
B	ATP binds to sarcoplasmic reticulum
C	Acetylcholine enters the synaptic cleft
D	Action potential travels along T tubules

Explanation:

Detailed explanation-1: -Answer and Explanation: Calcium is released from the sarcoplasmic reticulum as an action potential passes through the T tubules.

Detailed explanation-2: -Depolarization of the sarcolemma (muscle membrane) caused by nerve stimulation causes calcium ions to be released from the sarcoplasmic reticulum.

Detailed explanation-3: -The action potential travels down the t-tubules and excites the sarcoplasmic reticulum which releases calcium. Calcium when bound to troponin causes conformational changes in the sarcomere. Consequently, the interaction of thick and thin filaments of the sarcomere leads to muscle contraction.

Detailed explanation-4: -What causes the release of calcium from the terminal cisternae of the sarcoplasmic reticulum within a muscle cell? rationale: an action potential in the T tubule causes the release of calcium from the terminal cisternae of the sarcoplasmic reticulum.

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