Increases muscle mass and strength Promotes growth of long bones Increases basal metabolic rate
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Enhances production of RBCs Enlargement of vocal cords Affects distribution of body hair
Increase in the size of the penis and testes, growth spurt, pubic & facial hair, and deepening of voice
Breast development, menstrual cycle, growth spurt, and pubic & axillary (armpit) hair
2-2 1/2 years after puberty,
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