Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «M»:
Medigap policy: In the US, a Medicare supplement insurance policy sold by private insurance companies to fill "gaps" in Original Medicare Plan coverage. Except in Massachusetts, Minnesota and Wisconsin, there are 10 standardized plans labeled Plan A through Plan J. Medigap policies only work with th...
Meditation: A self-directed practice for
relaxing the body and calming the mind. Most meditative
techniques have come to the West from Eastern religious
practices, particularly India, China, and Japan, but can be
found in all cultures of the world. Until recently, the
primary purpose of meditat...
Mediterranean anemia: Better known today as thalassemia (or as
beta thalassemia or thalassemia major).
The clinical picture of this important type of
anemia was first described in 1925 by the pediatrician Thomas Benton Cooley. The name
thalassemia was coined by the Nobel Prize winning pathologist ...
Mediterranean diet: A diet traditionally followed in Greece, Crete, southern France, and parts of Italy that emphasizes fruits and vegetables, nuts, grains, olive oil (as opposed to butter) and grilled or steamed chicken and seafood (as opposed to red meat). Plus a glass or two of red wine.
To be ex...
Mediterranean Fever: A inherited disorder of
unknown cause featuring short recurring bouts of fever together with
pain in the joints,
chest or abdomen. Also called Familial Mediterranean Fever (FMF).
Between attacks, the patient seems healthy (when FMF is more
to diagnose). The gene for...
Mediterranean-style diet: See: Mediterranean diet....
Medium-chain acyl-CoA dehydrogenase
Medium-chain acyl-CoA dehydrogenase: An enzyme abbreviated as MCAD. See: MCAD deficiency....
Medium-chain acyl-CoA dehydrogenase deficiency
Medium-chain acyl-CoA dehydrogenase deficiency: See: MCAD deficiency....
MEDLARS: MEDLARS® is an acronym that stands for Medical Literature Analysis and Retrieval System.
It is a computer-based system of the U.S. National Library of Medicine (NLM) that allows rapid access to NLM's store of biomedical information.
MEDLARS is used for preparing publications like Ind...
MEDLINE: MEDLINE® is the best known database of the U.S. National Library of Medicine (NLM). MEDLINE enables anyone to query the NLM
computer's store of journal article references on specific topics. It currently
contains 9 million references going back to the mid-1960s. Other databases
Medulla: The innermost part. The adrenal medulla is the innermost part of that gland. The renal medulla is the inner part of the kidney. The spinal medulla is the part of the spinal cord that is lodged within the vertebral canal....
Medulla oblongata: The base of the brain, which
is formed by the enlarged top of the spinal cord. This part
of the brain directly controls breathing, blood flow, and
other essential functions....
Medulla, adrenal: The inner portion of adrenal gland. (The outer portion is the adrenal cortex).
The adrenal medulla makes epinephrine (adrenaline) and norepinephrine (noradrenaline). Epinephrine is secreted in response to low blood levels of glucose as well as exercise and stress; it causes the b...
Medullary cystic kidney disease, recessive
Medullary cystic kidney disease, autosomal recessive type: A childhood genetic kidney disease in which there is progressive symmetrical destruction of the kidneys involving both the tubules and glomeruli, characteristically resulting in anemia, polyuria, polydipsia, isosthenuria (decreased ability t...
Medulloblastoma: A type of brain tumor that tends to
occur in children, arise in the cerebellum (in the lower part of the brain), and spread along the spine.
Medulloblastoma is the most common type of primary brain tumor in childhood. It is a type of primitive neuroectodermal tumor (PNET). Medull...