Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «G»:
GOLD-2: One of the stages of chronic obstructive lung disease (COPD), according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD).
GOLD-2 is stage II in the GOLD classification of COPD and indicates "moderate COPD." This stage is characterized by worsening airflow and usually the...
GOLD-3: One of the stages of chronic obstructive lung disease (COPD), according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD).
GOLD-3 is stage III in the GOLD classification of COPD and indicates "severe COPD." This stage is characterized by severe airflow limitation or the p...
Goldberger, Joseph: American public health physician (1874-1929) who solved the puzzle of pellagra. See: Pellagra....
Goldenhar syndrome: Congenital malformation of the jaw, cheek and ear associated with vertebral defects. There is deformity of the external ear and abnormal smallness of that half of the face. Coloboma (cleft) of the upper eyelid is frequent. The ear deformities range from tags in front of the ear, ...
Goldring: See: Goldring, Sidney....
Goldring, Sidney: Polish-born American neurosurgeon who pioneered the surgical treatment of epilepsy. Beginning in the 1970s, Dr. Goldring developed a technique that allows the brain to be mapped, enabling the procedure to be used with children with intractable epilepsy. After a stint at the Univers...
Golfer's cramp: A dystonia that affects the
muscles of the hand and sometimes the forearm and only occurs when playing golf. Similar
focal dystonias have also been called typist's cramp, pianist's cramp,
musician's cramp, and writer's cramp. Golfer's cramp provides a
reason to switch to tennis (and ...
Gonad: A reproductive gland (ovary or testis) that produces germ cells (gametes).
In embryonic life, the gonad in males and females is initially identical. This gonad is said to be "indifferent" before it differentiates into a definitive testis or ovary.
An indifferent gonad becomes a testis if the ...
Gonad, female: The female gonad, the ovary or "egg sac", is one of a pair of reproductive glands in women. They are located in the pelvis, one on each side of the uterus. Each ovary is about the size and shape of an almond. The ovaries have two functions: they produce eggs (ova) and female hormones....
Indifferent gonad: In embryonic life, the gonad in males
and females is initially identical. This gonad is said to be
"indifferent" before it differentiates into a definitive testis or
ovary. An indifferent gonad becomes a testis if the embryo has a Y
chromosome, but if the embryo has no Y chrom...
Gonad, male: The male gonad, the testicle (or testis), located behind the penis in a pouch of skin (the scrotum). The testicles produce and store
sperm and are also the body's main source of male hormones (testosterone). These hormones control the development of the reproductive organs and other ma...
Gonadotropin: Hormones that are secreted by the
pituitary gland, and that affect the function of the male
or female gonads. See follicle-stimulating hormone, human
Gonadotropin, human chorionic
Gonadotropin, human chorionic: See: Human chorionic gonadotropin....
Gonarthritis: Inflammation of the knee joint....
Gonorrhea: A sexually transmitted infection (STI) caused by the bacterium Neisseria
gonorrhoea. Although gonorrhea is known primarily as a sexually transmitted infection (STI), it is not exclusively so, but can also be transmitted to the newborn during the birthing process.
Contrary to popular b...