At What Point During Excitation Contraction Coupling Does Exocytosis Play

question 132

Multiple Choice

At what point during excitation contraction coupling does exocytosis play a role?

• A) during calcium ion reuptake into the sarcoplasmic reticulum
• B) when sodium channels open up on the motor end plate
• C) during acetylcholine release from the synaptic terminal
• D) when the action potential surges through the T-tubules
• E) when ATP splits into ADP and P on the free myosin head

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