Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «G»:
Glenohumeral dislocation: See: Shoulder dislocation....
Glenoid labrum: A ring of fibrocartilage that runs around the cavity of the scapula (wingbone) in which the head of the humerus (the bone in the upper arm) fits. The labrum deepens this cavity (the glenoid cavity) and effectively increases the surface of the shoulder joint.
Injuries to the glenoid l...
Gliadin: A glycoprotein (a carbohydrate plus a protein) within gluten. Gliadin is found in wheat and some other grains, including oats, rye, barley, and millet. People with celiac disease, Crohn's disease, and other conditions may be sensitive to gliadin in the diet. In these conditions, antibodie...
Glial cell: A supportive cell in the central nervous system -- the brain and spinal cord. Glial cells do not conduct electrical impulses (as opposed to neurons, which do). The glial cells surround neurons and provide support for them and insulation between them. Glial cells are capable of extensive...
Glial fibrillary acidic protein
Glial fibrillary acidic protein: See: GFAP. ...
Glioblastoma multiforme: A type of tumor that forms from glial (supportive) tissue in the brain. It is highly malignant, grows very quickly, and has cells that look quite different from normal glial cells. Early symptoms may include sleepiness, headache, and vomiting. Also called a grade IV astrocy...
Glioma: A brain tumor that begin in a glial, or supportive, cell, in the brain or spinal cord. Malignant gliomas are the most common primary tumors of the central nervous system (the brain and spinal cord). They are often resistant to treatment and carry a poor prognosis (have a dismal outlook).
Glioma, optic: See Optic glioma....
Glioma, visual pathway
Glioma, visual pathway: See Visual pathway glioma....
Gliosis: A process leading to scars in the central nervous system that involves the production of a dense fibrous network of neuroglia (supporting cells) in areas of damage. Gliosis is a prominent feature of many diseases of the central nervous system, including multiple sclerosis and stroke. After ...
Glisson's capsule: The capsule of the liver. A layer of connective tissue surrounding the liver and ensheathing the hepatic artery, portal vein, and bile ducts within the liver. Named for the British physician, anatomist, physiologist, and pathologist Francis Glisson (1597-1677)....
Gln: Glutamine. See also: Amino acid symbols....
Global Initiative for Chronic Obstructive Lung Dis
Global Initiative for Chronic Obstructive Lung Disease: See: GOLD....
Global warming: The sustained increase in the average temperature of the earth's atmosphere. Human activity contributes to this change through the buildup of heat-trapping greenhouse gases. Over time, this increase may be sufficient to cause climatic change, including raising sea levels, altering pr...
Globe, pale: Also called the globus pallidus, this is a
pale-appearing spherical area in the brain. Globus is a Latin word
meaning a globe or sphere. Pallidus refers to its pallor relative to
the surrounding brain substance.
The globus pallidus is specifically part of what is called the