Question

Osteoporosis, an age related disease of skeletal system, may occur due to

• A. accumulation of uric acid leading to inflammation of joints
• B. immune disorder affecting neuromuscular junction leading to fatigue
• C. high concentration of ${\mathrm{Ca}}^{2^{+}}$and ${\mathrm{Na}}^{+}$
• D. decreased level of estrogen

Answer 1

The correct option is D decreased level of estrogen

Osteoporosis is an age-related disorder characterised by decreased bone mass and increased chances of fractures. Decreased levels of estrogen is a common cause.

Accumulation of uric acid leading to inflammation of joints causes gout disease.

Myasthenia gravis is an autoimmune disease in which the immune system mistakenly attacks healthy body cells. It affects neuromuscular junction leading to fatigue and paralysis of skeletal muscle.

Hence, option D is the correct answer.