Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «G»:
GIST: Gastrointestinal stromal tumor....
GJB2: A gene that provides
instructions to make a protein called gap junction beta 2. Mutations in the GJB2 gene are responsible for autosomal dominant and autosomal recessive forms of nonsyndromic deafness (hearing loss without related signs and symptoms affecting other parts of the body) as well ...
GLA: 1. Alpha-galactosidase A, the enzyme that is deficient in Fabry disease.
2. Gamma-linolenic acid, an essential fatty acid.
Glabella: 1. The area between the eyebrows, just above the nose.
2. The corresponding area on the frontal bone between the eyebrow ridges.
From the Latin glabellus, hairless, from glaber, bald....
Gland: 1. A group of cells that secrete a substance for use in the body. For example, the thyroid gland. 2. A group of cells that removes materials from the circulation. For example, a lymph gland....
Gland of external secretion
Gland of external secretion: See: Exocrine gland....
Gland of internal secretion
Gland of internal secretion: See: Endocrine gland....
Gland, adrenal: One of a pair of small glands, each of which sits on top of one of the kidneys. The adrenal is made up of an outer wall (the cortex) and an inner portion (the medulla).
The adrenal glands produce hormones that help control the heart rate, blood pressure, the way the body uses food, a...
Gland, bulbourethral: See: Bulbourethral gland....
Gland, Cowper's: See: Bulbourethral gland....
Gland, endocrine: See: Endocrine gland....
Gland, exocrine: See: Exocrine gland....
Gland, lacrimal: See: Lacrimal gland....
Gland, mammary: One of the glands within the
breast that secrete milk when prompted to do so by special
hormones. Mammary glands are slightly tender to the touch,
and may become more so during menstruation or pregnancy.
They become enlarged when engorged with milk. See also
Gland, Meibomian: See: Meibomian gland....