Your pituitary gland (also known as hypophysis) is a small, pea-sized gland located at the base of your brain below your hypothalamus. It sits in its own little chamber under your brain known as the sella turcica. It’s a part of your endocrine system and is in charge of making several essential hormones. Your pituitary gland also tells other endocrine system glands to release hormones. One of the hormones that it makes is the Thyroid-stimulating hormone, TSH stimulates your thyroid to produce thyroid hormones that manage your metabolism, energy levels, and your nervous system.
Explanation: SCID is severe combined immune deficiency, a rare genetic disorder in which affected children have no resistance to disease and must be kept isolated from infection from birth.