The pituitary gland is a pea-sized gland that lies at the base of the skull, in the brain. It is considered as the master gland because it produces hormones that regulate hormones produced by other glands and exerts considerable control over the various bodily functions. The gland produces various hormones as–anti diuretic hormone (ADH), growth hormone, follicle stimulating hormone (FSH), leutinizing hormone (LH) and thyroid stimulating hormone (TSH). They regulate the various functions of the body. For example: bone and muscle growth, body changes at puberty, childbirth, lactation and water retention in the kidneys.