Flora is plant life; fauna refers to animals. Fauna derives from the name of a Roman goddess, but the handiest way to remember flora and fauna is that flora sounds like flowers, which are part of the plant world, and fauna sounds like fawn, and fawns are part of the animal kingdom. Definitions of fauna.
The testes and ovaries, or gonads, are perhaps the most familiar endocrine glands. In males, testes produce sperm and secrete the male sex hormone testosterone; in females, ovaries produce eggs and the female hormone estrogen.It is these hormones that determine secondary sex characteristics like muscle mass and facial hair. They also help to orchestrate sperm production, menstruation and pregnancy.he testes and ovaries, or gonads, are perhaps the most familiar endocrine glands. In males, testes produce sperm and secrete the male sex hormone testosterone; in females, ovaries produce eggs and the female hormone estrogen.
The pituitary gland releases Thyroid Stimulating Hormone (TSH), which travels directly to the thyroid gland. This hormone stimulates the thyroid gland to produce the two main hormones, T3 and T4. T3 is the more active and usable form of thyroid hormone, but only 7% of the thyroid hormones produced are in the T3 form. 93% of thyroid hormone produced is T4. T4 must be converted into T3 to become useful for the body.