Multiple sclerosis is caused by attack of antibodies over

Sarcolemma of muscle cells

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Cartilage cover

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Myelin sheath of nerve cells

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Periosteum

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Solution

The correct option is C Myelin sheath of nerve cells
Multiple sclerosis is the most common autoimmune disorder affecting the central nervous system. Multiple sclerosis is a demyelinating disease in which the insulating covers (myelin sheath) of nerve cells in the brain and spinal cord are damaged by the attack of antibodies. Symptoms include double vision, blindness in one eye, muscle weakness, trouble with sensation, or trouble with coordination.
So, the correct answer is 'Myelin sheath of nerve cells'.

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The change in converging power of an eye-lens is caused by the action of:

(a) iris

(b) ciliary muscles

(d) retina

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