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Myasthenia Gravis

In myasthenia...

Question

In myasthenia gravis, acetylcholine:

A

Esterase activity is inhibited

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B

Receptors on motor end plate are reduced

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C

Secretion from nerve terminalis is reduced

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D

Secretion from nerve terminalis is enhanced

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Solution

The correct option is B Receptors on motor end plate are reduced
It is an auto immune disorder which results from antibodies that block or destroy nicotinic acetylcholine receptors at the junction between the nerve and muscle.

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Similar questions

Q. Select the correct combination of statements regarding the disease, myasthenia gravis.
(i) It is an autoimmune disorder.
(ii) It causes insufficient acetylcholine binding that affects muscular contraction.
(iii) Antibodies are developed against acetylcholine.
(iv) Antibodies are developed against acetylcholine receptors.
(v) Antibodies are developed against acetylcholine esterase.
(vi) It causes drooping of eyelids.

Q. In Myasthenia gravis, acetylcholine

In myasthenia gravis acetylcholine:

Q. Assertion :Acetylcholine is a predominant neurotransmitter. Reason: It occurs in vertebrates, cholinergic effector organs, postganglionic parasympathetic nerve endings and preganglionic sympathetic nerve endings

Q. Distinguish between the following pairs of words:

(i) Nerve cell and neuroglia cell
(ii) Nervous system and hormonal system
(iii) Cranial nerve and spinal nerve
(iv) Cerebrum and cerebellum
(v) Adrenalin and acetylcholine
(vi) Motor and sensory nerve
(vii) Grey matter and white matter
(viii) Myopia and hypermetropia

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