Locomotion and Movement Question 47
47. Select the correct statement regarding the specific disorder of muscular or skeletal system:
[2012]
(a) Muscular dystrophy $-$ age related shortening or muscles.
(b) Osteoporosis $-$ decrease in bone mass and higher chance of fractures with advancing age.
(c) Myasthenia gravis $-$ Auto immune disorder which inhibits sliding of myosin filaments
(d) Gout $-$ inflammation of joints due to extra deposition of calcium.
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Answer : b
Hints & Solutions
(b) Major causative factors of osteoporosis are imbalances of hormones like calcitonin of thyroid, parathormone of parathyroids, sex hormones, and deficiencies of calcium and vitamin D.