Q:

In skeletal muscle neuromuscular junctions

safaTerkawi
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2022-08-09
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 In skeletal muscle neuromuscular junctions.

  1. The motor end plate is the motor nerve terminal.
  2. Spontaneous (miniature) potentials may be recorded in the motor nerve terminal.
  3. Motor nerve terminals have vesicles containing acetylcholine.
  4. There is a high concentration of acetylcholinesterase.
  5. Transmission is facilitated by botulinum toxin.
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safaTerkawi
2022-08-09
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 A. False It is the modified muscle membrane adjacent to the nerve terminal.

B. False They may be recorded at the motor end plate.

C. True This neurotransmitter, released by exocytosis, excites the end plate membrane.

D. True This makes acetylcholine’s action transient.

E. False Botulinum toxin blocks transmission by an action on the motor nerve terminals

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