Answer:
he hypothalamus and pituitary gland, which are in the brain, initiate puberty. The hypothalamus secretes luteinizing hormone-releasing hormone, which stimulates the pituitary to secrete luteinizing hormone and follicle-stimulating hormone. Luteinizing hormone causes the testes to produce testosterone. Follicle-stimulating hormone (plus testosterone) causes the testes to produce sperm. Testosterone is responsible for the development of secondary sex characteristics, features that stimulate male development (including characteristics that are not part of the reproductive system, such as facial hair growth and voice change).
Explanation:
The forearms and lower legs each contain two bones running roughly parallel to each other. In the forearms, these two bones are the radius and ulna, and in the lower legs, these two bones are the tibia (the shinbone) and fibula.
The radius corresponds to the tibia and the ulna to the fibula.
Answer:
true is especially now and have a great day
Answer:
he suffered from SCID/severe combined immunodeficiency.
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