Part of motor neuron which makes a synapse with sarcolemma is:
Correct answer: B. Axon
- A. Motor unit
- B. Axon
- C. Dendron
- D. Dendron and axon
Explanation
The part of the motor neuron that makes a synapse with the sarcolemma is called the motor end plate. It is a specialized region of the sarcolemma that contains receptors for the neurotransmitter acetylcholine. When acetylcholine is released from the motor neuron, it binds to the receptors on the motor end plate, which causes the muscle fiber to contract. The motor end plate is located on the surface of the muscle fiber, and it is where the axon of the motor neuron terminates. The axon branches out into a number of terminal buttons, which are the structures that release acetylcholine.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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