Which of the following stimulates protein metabolism and muscle growth?
A
Estrogen
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B
Testosterone
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C
Progesterone
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D
Oxytocin
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Solution
The correct option is A Testosterone
Testosterone is secreted from Leydig cells of testis in males. It regulates many functions such as development of secondary sex organs and sexual characters (moustache, beard, body hair). It also stimulates growth of body tissues, broadening of shoulders, growth of muscles, protein metabolism, aggressiveness etc.