Which of the following statements are false?
I Testosterone belongs to a class of male hormones called androgens.
II Women also produce testosterone, but at lower levels than men.
III Testosterone is a steroid.
IV The brain's hypothalamus and pituitary glands control testosterone production.
None of the above
Testosterone is a male sex hormone that is important for sexual and reproductive development. Women also produce testosterone, but at lower levels than men. Testosterone belongs to a class of male hormones called androgens, which are sometimes called steroids or anabolic steroids. In men, testosterone is produced mainly in the testes, with a small amount made in the adrenal glands. The brain's hypothalamus and pituitary glands control testosterone production. The hypothalamus instructs the pituitary gland on the amount of testosterone to be produced, and the pituitary gland passes the message on to the testes. These communications happen through chemicals and hormones in the bloodstream. Testosterone is involved in the development of male sex organs before birth, and the development of secondary sexual characteristics at puberty, such as voice deepening, increased penis and testes size, and growth of facial and body hair.