pituitary gland

[ pi-too-i-ter-ee gland, pi-tyoo‐ ]

noun

, Anatomy.

1. a small, somewhat cherry-shaped double structure attached by a stalk to the base of the brain and constituting the master endocrine gland affecting all hormonal functions in the body, consisting of an anterior region anterior pituitary, oradenohypophysis that develops embryonically from the roof of the mouth and that secretes growth hormone, LH, FSH, ACTH, TSH, and MSH, a posterior region posterior pituitary, orneurohypophysis that develops from the back of the forebrain and that secretes the hormones vasopressin and oxytocin, and an intermediate part pars intermedia, derived from the anterior region but joined to the posterior region, that secretes the hormone MSH in lower vertebrates.

pituitary gland

noun

1. the master endocrine gland, attached by a stalk to the base of the brain. Its two lobes (the adenohypophysis and neurohypophysis) secrete hormones affecting skeletal growth, development of the sex glands, and the functioning of the other endocrine glands Also calledhypophysishypophysis cerebri See also adenohypophysis neurohypophysis

pituitary gland

/ pĭ-to̅o̅′ĭ-tĕr′ē /

1. A gland at the base of the brain in vertebrate animals that is divided into two regions, anterior and posterior, each of which secretes important hormones. The anterior portion, whose secretions are directly controlled by the hypothalamus, produces hormones that regulate the function of most of the body's hormone-producing glands and organs, including the thyroid and adrenal glands. Growth hormone is also produced by the anterior pituitary. The posterior pituitary releases antidiuretic hormone (ADH) and oxytocin.

pituitary gland

1. A small gland , attached to the base of the brain and controlled by the hypothalamus , that functions in the endocrine system . The pituitary gland secretes many hormones : some control the actions of other glands, whereas others influence growth, metabolism , and reproduction.

Word History and Origins

Origin of pituitary gland¹

First recorded in 1605–15

Example Sentences

He said a non-cancerous tumour had been found on his pituitary gland in his brain.

From BBC

Very rarely, the syndrome can be caused by the body producing too much cortisol, caused by a tumour in the pituitary gland in the brain or in one of the adrenal glands above the kidneys.

From BBC

There he became interested in a leading problem of the day — that of how the brain controls the pituitary gland, the maestro organ that cues production of the body’s other major glands.

From New York Times

“Events” is a generous way to describe the action, which mostly unfolds in and around the narrator Eve’s pituitary gland.

From New York Times

From birth, Jorgie was in and out of hospital with a pituitary gland problem that affected her development and made her face puffy.

From BBC