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.
Thyroid gland is an endocrine gland which secretes two types of hormones, T3 and T4. These hormones are concerned with the regulation of metabolism in human body. The under activity of these hormones results in hypothyroidism while hyperthyroidism, is an outcome of over-activity of T3 and T4 hormones.The levels of T3 and T4 in the body are determined by another hormone called Thyroid Stimulating Hormone (TSH).This hormone is secreted by the pituitary gland.he under activity of these hormones results in hypothyroidism while hyperthyroidism, is an outcome of over-activity of T3 and T4 hormones. The levels of T3 and T4 in the body are determined by another hormone called Thyroid Stimulating Hormone (TSH). This hormone is secreted by the pituitary gland.