1. Neuromuscular Junction (NMJ) Structure

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10 Terms

1
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What innervates all skeletal muscle fibers?

Somatic motor neuron

2
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What is the neuromuscular junction?

Synapse between neuron and muscle

3
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What is the common abbreviation for neuromuscular junction?

NMJ

4
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What are the three structural components of the NMJ?

  1. Synaptic knob, 2. Motor-end plate, 3. Synaptic cleft
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What vesicles are contained within the synaptic knob?

Vesicles with ACh

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What does the abbreviation ACh stand for?

Acetylcholine

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What is the motor-end plate?

Folded sarcolemma at NMJ

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What specific ion channels are contained in the motor-end plate?

Ligand-gated sodium channels

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Why is the motor-end plate folded?

Increase surface area

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What is the synaptic cleft?

Space between knob and plate