Neuromuscular Junction Worksheet
A Grade 12 Science worksheet covering the structure and function of the neuromuscular junction, including neurotransmission and muscle contraction.
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Neuromuscular Junction Worksheet
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Read each question carefully and provide your best answer. Refer to your knowledge of the neuromuscular junction.
1. What is the primary neurotransmitter released at the neuromuscular junction?
Dopamine
Acetylcholine
Serotonin
Norepinephrine
2. Which enzyme is responsible for breaking down the neurotransmitter in the synaptic cleft?
ATPase
Acetylcholinesterase
Lactase
Amylase
3. The space between the motor neuron and the muscle fiber is called the .
4. When an action potential reaches the axon terminal, ions rush into the neuron.
5. Briefly describe the role of acetylcholine receptors on the muscle fiber membrane.
6. The binding of acetylcholine to its receptors causes an influx of sodium ions into the muscle fiber.
True
False
7. Identify the labeled structures in the diagram of the neuromuscular junction below.
A:
B:
C:
D: