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.
T3 & T4. The thyroid gland is responsible for regulating body metabolism through its production of thyroxine (T4) and triiodothyronine (T3) tyrosine-based hormones. You may have heard about the T3 and T4 hormones before, but may not realize its importance in your body. The T3 and T4 hormones are produced by the thyroid gland, and are secreted into the blood stream to regulate the body's metabolism. Functions of T3 and T4. These hormones are essential to the growth of the body. The T3 and T4 hormones act on almost every cell, increasing the metabolic rate, affecting protein synthesis and regulating bone growth.