MEDICAL PHYSIOLOGY

PHYSIOLOGY

GENERAL PHYSIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
enzyme that breaks down the muscle cell neurotransmitter and ends the impulse
A
lactase
B
sucrase
C
lipase
D
acetylcholinterase
Explanation: 

Detailed explanation-1: -Acetylcholinesterase (AChE) is a cholinergic enzyme primarily found at postsynaptic neuromuscular junctions, especially in muscles and nerves. It immediately breaks down or hydrolyzes acetylcholine (ACh), a naturally occurring neurotransmitter, into acetic acid and choline.

Detailed explanation-2: -Free acetylcholine within the synaptic cleft is degraded by an enzyme called acetylcholinesterase. This enzyme assures that no excess of acetylcholine remains in the synaptic cleft to cause the continuous activation of receptors. Acetylcholine has different roles and functions at different synapses throughout the body.

Detailed explanation-3: -The enzyme acetylcholine esterase breaks down the neurotransmitter acetylcholine, which is released at nerve and muscle junctions, in order to allow the muscle or organ to relax.

Detailed explanation-4: -Acetylcholinesterase (generally referred to as cholinesterase): an enzyme that rapidly breaks down the neurotransmitter, acetylcholine, so that it does not over-stimulate post-synaptic nerves, muscles, and exocrine glands.

Detailed explanation-5: -Acetylcholine. Acetylcholine action is terminated by acetylcholinesterase, an enzyme present in the synaptic cleft. Acetylcholinesterase degrades acetylcholine into choline and acetate molecules. Choline is then transported back into the presynaptic terminal and used in the synthesis of new acetylcholine.

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