NEET PG DENTAL EXAM

EMBRYOLOGY

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The neurotransmitter that signals muscle contraction is called ____
A
Acetylcholine
B
Myosin
C
Actin
D
Calcium
Explanation: 

Detailed explanation-1: -Acetylcholine also functions as a neurotransmitter in the autonomic nervous system, acting both as the neurotransmitter between preganglionic and postganglionic neurons as well as being the final release product from parasympathetic postganglionic neurons.[1]

Detailed explanation-2: -Acetylcholine is the neurotransmitter at neuromuscular junctions, at synapses in the ganglia of the visceral motor system, and at a variety of sites within the central nervous system.

Detailed explanation-3: -In the peripheral nervous system, when a nerve impulse arrives at the terminal of a motor neuron, acetylcholine is released into the neuromuscular junction. There it combines with a receptor molecule in the postsynaptic membrane (or end-plate membrane) of a muscle fibre.

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