Respond to the following based on your reading
1. are chemical messengers secreted by glands.
2. Exocrine glands, such as sweat glands, secrete fluids through ducts.
glands secrete hormones directly into the bloodstream
3. The gland plays an important role in puberty and growth
4 Epinephrine, triggering the "fight or flight response, is produced by the
glands, which sit on top of the kidneys.
5. Most glands that secrete hormones operate using feedback mechanisms.
When hormone concentrations are high, the gland will produce
of
the hormone
6. Many cells produce chemicals called hormone-Eke substances that
impact inflammation and reproduction
7. The gland that helps regulate growth, body temperature, and the level of
calcium in the blood is called the
8. Describe the function and compare steroidal and nonsteroidal hormones. How
does each type of hormone interact with the cell? What other molecules are
required for or involved in their function?

Hormones are signaling molecules secreted by the body to control cellular activities The endocrine glands are glands that don't have ducts to carry their secreted products (hormones) to the surface. Endocrine glands include the hypothalamus, ovaries, testes, pancreas, adrenal glands, parathyroid glands, pituitary gland, pineal gland, thymus and thyroid glands. The pituitary gland is an endocrine gland that secretes many hormones into the bloodstream, which are capable of controlling the functioning of other organs and glands. During the puberty stage, this gland secretes LH and FSH gonadotropin hormones that affect male and female gonads in order to activate the production of sex hormones. The adrenal glands secrete cortisol, which is known as the stress hormone. These glands also produce adrenaline which regulates visceral functions such as, for example, respiration. The parathyroid hormone-like hormone (PTHLH) is generated by epithelial cells and plays important roles in fetal and adult tissues, (i.e., cell proliferation, differentiation and morphogenesis). The thyroid gland regulates body temperature, while parathyroid glands control the calcium level in the blood by secreting the parathyroid hormone (PTH). Steroid hormones are lipidic hormones known to bind steroid receptors and they can easily cross the cell membrane, while non-steroid hormones cannot diffuse across the cell membranes and they are secreted by the endocrine system.