Triggering of the muscle action potential occurs after A) ...

[elizabeth18]

Triggering of the muscle action potential occurs after
 A) acetylcholine binds to chemically-gated channels in the motor end plate.
  B) acetylcholinesteras e is released from synaptic vesicles into the synaptic cleft.
  C) calcium ion binds to channels on the motor end plate.
  D) the action potential jumps across the neuromuscular junction.
  E) Any of these can produce an action potential in the muscle cell.

Question 2

In a sarcomere, cross-bridge attachment occurs specifically in the
 A) zone of overlap.
  B) A band.
  C) I band.
  D) M line.
  E) H band.

[yifu223]

Answer to Question 1

A

Answer to Question 2

A

[elizabeth18]

Thanks for the timely response, appreciate it

[Dominic]

Excellent