In which gland is testosterone produced?

Testosterone is primarily produced in the testes, which are the male reproductive glands. The testes are responsible for the significant production of this hormone, particularly in response to luteinizing hormone (LH) stimulation from the pituitary gland. Testosterone plays a crucial role in the development and maintenance of male secondary sexual characteristics, such as facial hair, deepening of the voice, and increased muscle mass.

While the adrenal glands do produce small amounts of androgens, including testosterone, the majority of testosterone found in males is synthesized in the testes. The pituitary gland's role is more regulatory, as it produces hormones that stimulate the testes rather than producing testosterone directly. The thyroid gland, on the other hand, primarily produces thyroid hormones (such as thyroxine), which are involved in metabolism and not in the production of sex hormones like testosterone.