In a Neuromuscular Junction,the Effect of Acetylcholine (ACh)binding to Receptors

question 17

Multiple Choice

In a neuromuscular junction,the effect of acetylcholine (ACh) binding to receptors on the motor end plate lasts only briefly due to

• A)rapid uptake of the ACh into the myofiber.
• B)endocytosis of the ACh receptor into the myofiber.
• C)rapid destruction of ACh in the synaptic cleft by acetylcholinesterase.
• D)rapid destruction of ACh in the synaptic cleft by monoamine oxidase.
• E)diffusion of the ACh out of the synaptic cleft.

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