Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «M»:
MB ChB: Bachelor of Medicine and Bachelor of Surgery degrees. See: MBChB....
MBChB: Bachelor of Medicine and Bachelor of Surgery degrees, which are awarded in the U.K. and other countries (such as New Zealand and South Africa) after 5 years of what is analogous to a combined undergraduate-graduate course of study. As a rule, the first two years of the program leading to the ...
MCAD: Abbreviation for medium-chain acyl-CoA dehydrogenase. See: MCAD deficiency....
MCAD deficiency: Deficiency of
an enzyme that makes it impossible to digest certain kinds of fat. MCAD stands for medium-chain acyl-CoA dehydrogenase. Children born with MCAD deficiency cannot metabolize (digest) medium-chain fats such as coconut oil. If undiagnosed, the disorder can lead to metabo...
MCAF:Monocyte chemotactic and activating factor. See: MPC1....
McArdle disease: Glycogen storage disease type V and the most common type of glycogen storage disease. McArdle disease is an autosomal recessive disorder caused by mutations in the gene that encodes myophosphorylase, an enzyme that is essential for glycogenolysis. Exercise intolerance usually develo...
McArdle's disease: See: McArdle disease....
MCAT: The Medical College Admissions Test, a test that is required of all applicants to medical school in the U.S. and Canada. The MCAT is "a standardized test used to assess applicants' science knowledge, reasoning, and communication and writing skills." The MCAT is given under the aegis of the Ass...
McBurney's point: McBurney's point is the most tender area of the abdomen of patients in the early stage of appendicitis.
McBurney's point is named after the 19th-century New York surgeon Charles McBurney (1845-1913) who was the leading authority in his day on the diagnosis and treatment of appen...
McClintock: See: McClintock, Barbara...
McClintock, Barbara: (1902-1992) American geneticist who won the 1983 Nobel Prize in Physiology or Medicine for her discovery of genetic transposition, or the ability of genes to change position on the chromosome.
Barbara McClintock was born in Hartford, Connecticut. Her family moved to Brooklyn, Ne...
McCune-Albright syndrome: A genetic disorder of bones, skin pigmentation and hormonal problems with premature sexual development. Also called Albright syndrome or polyostotic fibrous dysplasia. In the syndrome, there is bone disease with fractures and deformity of the legs, arms and skull; pigment ...
MCD: Abbreviation (not only for McDonald's but also) for a number of entities in medicine including minimal change disease, mean corpuscular diameter, and medullary cystic disease....
MCH: Abbreviation for mean cell hemoglobin, which is the average amount of hemoglobin in the average red cell. The MCH is a calculated value derived from the measurement of hemoglobin and the red cell count. (The hemoglobin value is the amount of hemoglobin in a volume of blood while the red cell c...
MCHC: Abbreviation for mean cell hemoglobin concentration, which is the average concentration of hemoglobin in a given volume of blood. The MCHC is a calculated value derived from the measurement of hemoglobin and the hematocrit. (The hemoglobin value is the amount of hemoglobin in a volume of bloo...