Asked by Michelle Joyal on Sep 23, 2024
Verified
The synaptic knob of a neuromuscular junction is the portion of the muscle fiber that contains receptor sites for neurotransmitters.
Synaptic Knob
The part of a neuron that releases neurotransmitters to transmit signals to another neuron or muscle cell.
Neuromuscular Junction
The synapse or junction where a motor neuron transmits a signal to a muscle fiber causing it to contract.
Muscle Fiber
An individual muscle cell, long and cylindrical, which contracts to produce movement.
- Explain the neuromuscular junction and synaptic mechanisms in muscle activation.
Verified Answer
BP
Brittney Poole1 day ago
Final Answer :
False
Explanation :
The synaptic knob is part of the neuron, not the muscle fiber. It is the neuron's axon terminal that releases neurotransmitters into the synaptic cleft, where they can bind to receptor sites on the muscle fiber.
Learning Objectives
- Explain the neuromuscular junction and synaptic mechanisms in muscle activation.
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