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  1. Which one of the following completes the given statement correctly ?
    Cretinism is a human disorder which is due to the under secretion of
    1. Adrenalin hormone
    2. Cortisone hormone
    3. Glucagon hormone
    4. Thyroxin hormone
Correct Option: D

Thyroxine deficiency in childhood or infancy results in a condition called cretinism. Its symptoms are :
(i) Lack of skeletal development resulting in deformed bones stunted body growth.
(ii) Mental deficiency, retardation of development of sex organs and Low BMR along with slow pulse and respiration rate.



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