Site MapHelpFeedbackFunction of the Neuromuscular Junction (Quiz 3)
Function of the Neuromuscular Junction (Quiz 3)

How are nerves and muscles connected? Nerves and muscles are connected through synapses in the same way that different neurons are connected to one another. Acetylcholine is the neurotransmitter used by the motor neurons to stimulate action potentials in the muscle cells. When an action potential reaches the end of a neuron, the acetylcholine is released and a new action potential begins in the muscle tissue. Nerves connecting to muscles are called motor neurons. Each neuromuscular junction is connected to a bundle of muscle fibers. A motor neuron may branch several times and connect to several bundles. All of these bundles will contract together upon getting a signal from the motor neuron.

View the animation below, then complete the quiz to test your knowledge of the concept.






1The primary neurotransmitter at the neuromuscular junction is
A)dopamine.
B)adrenaline.
C)acetylcholine.
D)histamine.
E)serotonin.



2Arrange the following in the proper order in which they occur at the pre-synaptic side of a neuromuscular junction.
1. Calcium ions are released
2. Action potential arrives at the presynaptic terminal
3. Neurotransmitter is released
A)1, 2, 3
B)2, 1, 3
C)2, 3, 1
D)3, 2, 1
E)3, 1, 2



3Arrange the following in the proper order in which they occur at the post-synaptic side of a neuromuscular junction.
1. Action potential is propagated over the muscle cell membrane
2. Depolarization of the post-synaptic membrane
3. Sodium ions move into muscle cell
A)1, 2, 3
B)2, 1, 3
C)2, 3, 1
D)3, 2, 1
E)3, 1, 2



4The area between the pre-synaptic nerve cell and the post-synaptic muscle cell is termed the synaptic cleft.
A)True
B)False



5Receptors that bind the neurotransmitter at the post-synaptic cell membrane are voltage-gated.
A)True
B)False







Animation Quiz SiteOnline Learning Center

Home > Biology 1 > Chapter 49 > Function of the Neuromuscular Junction (Quiz 3)