Question

In Myasthenia gravis, antibodies start attacking the ______________

(a) Proprioceptors

(b) Chemoreceptors

(c) Acetylcholine receptors

(d) Cortisol receptors

I got this question in an international level competition.

I would like to ask this question from Human Health and Disease in chapter Human Health and Disease of Biology – Class 12

Answer 1

The correct answer is (c) Acetylcholine receptors

To explain I would say: In Myasthenia gravis, antibodies start attacking the acetylcholine receptors present on the sarcolemma, due to which the neurotransmitter i.e. acetylcholine could not bind to its receptors and hence, could not initiate nerve transmission. The skeletal muscles of the patient become weak and lead to paralysis.