MCQ MAHE 2000 Physiology Answer 12

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The Correct Answer is C

At a neuromuscular junction, the axon subdivides into numerous terminal buttons that reside within depressions formed in the motor end-plate. The particular transmitter in use at the neuromuscular junction is acetylcholine.

Table of Neurotransmitters

Transmitter Molecule

Derived From

Site of Synthesis

Acetylcholine

Choline

CNS, parasympathetic nerves

Serotonin
5-Hydroxytryptamine (5-HT)

Tryptophan

CNS, chromaffin cells of the gut, enteric cells

GABA

Glutamate

CNS

Glutamate


CNS

Aspartate


CNS

Glycine


spinal cord

Histamine

Histidine

hypothalamus

Epinephrine synthesis pathway

Tyrosine

adrenal medulla, some CNS cells

Norpinephrine synthesis pathway

Tyrosine

CNS, sympathetic nerves

Dopamine synthesis pathway

Tyrosine

CNS

Adenosine

ATP

CNS, periperal nerves

ATP


sympathetic, sensory and enteric nerves

Nitric oxide, NO

Arginine

CNS, gastrointestinal tract



Category: MAHE 2000 MCQs

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