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Events at the Neuromuscular Junction

Events at the Neuromuscular Junction

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Watch the Events at the Neuromuscular Junction animation.

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This activity contains 6 questions.

Question 1
1 As an axon enters a muscle, it branches into a number of axon terminals, each of which makes contact with a single muscle fiber. The portion of the sarcolemma in contact with the axon terminals is called the ________.
 
End of Question 1


Question 2
2 At the neuromuscular junction, calcium ions act to _________.
 
End of Question 2


Question 3
3 The first thing that occurs when the axon terminal releases ACh is _________.
 
End of Question 3


Question 4
4 What type of ion channel opens in response to an action potential arriving at the axon terminal?
 
End of Question 4


Question 5
5 What is the name of the enzyme that degrades ACh?
 
End of Question 5


Question 6
6 Identify the transport process by which ACh is released into the synaptic cleft.
 
End of Question 6


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