Oar definition, a long shaft with a broad blade at one end, used as a lever for rowing or otherwise propelling or steering a boat. See more.
Human Growth Hormone (rHGH, HGH, or GH), as the name suggests is a hormone that is responsible for the growth of the body through cell reproduction and regeneration.Also called somatropin, it is produced in the somatotropic cells in the pituitary gland.GH is primarily responsible for the proper growth of our bones, muscles and other tissues among children. Deficiency of this hormone would result in stunted growth of the human body.
A hormone is a chemical messenger produced by a cell that effects specific change in the cellular activity of other cells (target cells). Unlike exocrine glands (which produce substances such as saliva, milk, stomach acid and digestive enzymes), endocrine glands do not secrete substances into ducts (tubes).he two glands that are the most responsible for homeostasis is the thyroid and the parathyroid. The regulation of blood glucose concentration (through negative feedback) illustrates how the endocrine system maintains homeostasis by the action of antagonistic hormones.