Category: M
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Middle age
Conventionally considered to occur between ages 40 and 60–65 years and primarily defined by psychosocial rather than by physiological events. An imprecise term that refers to the period of life that begins roughly at age 40 and ends at about age 64. During middle age in Western societies, many medical problems begin to increase in…
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Midbrain
The part of the brain—also called the mesencephalon—that contains the tectum, the tegmentum, the ventricular mesocoelia, and the cerebral peduncles. The midbrain adjoins the pons caudally and the diencephalon rostrally. The middle of the three primitive enlargements of the developing brain in the embryo, connecting the pons and the cerebellum with the hemispheres of the…
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Microinsult
Offensive mechanisms or actions by a person that are designed to keep other individuals in an inferior, dependent, or helpless role. Microinsults usually are verbal exchanges that involve stereotyping of individuals (e.g., assuming that a female physician is a nurse or that the African American attending physician is the resident and the European-American resident is…
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Micrographia
A term used to describe abnormally small, cramped handwriting and/or the progression to continually smaller handwriting. Micrographia is one of the symptoms of parkinson’s disease.
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Microaggression
Offensive mechanisms or actions by a person that are designed to keep other individuals in an inferior, dependent, or helpless role. These actions are nonverbal and kinetic, and they are well suited to control space, time, energy, and mobility of an individual (usually nonwhite or female) while producing feelings of degradation.
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3-methoxy-4-hydroxyphenylglycol
A major metabolite of brain norepinephrine excreted in urine.
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Methylphenidate transdermal system
A transdermal patch form of methylphenidate, a mild central nervous system (CNS) stimulant used in the treatment of attention-deficit/hyperactivity disorder (ADHD). Marketed under the brand name daytrana.
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Methylphenidate
A longer-acting central nervous system (CNS) stimulant used in the treatment of attention-deficit/hyperactivity disorder (ADHD). Methylphenidate is available in immediaterelease (brand names methylin and ritalin) and extended-release (brand names concerta, metadate cd, ritalin la, and ritalin sr) formulations. A stimulant used in the treatment of ADHD. A drug which stimulates the central nervous system, used…
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Methylnaltrexone
A newer opioid antagonist medication that blocks some of the side effects of opioid drugs, such as the constipating effects on the gastrointestinal tract, without affecting analgesia or precipitating withdrawal. It is available only as an injection (marketed under the brand name relistor).
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Methylin
Brand name for the central nervous system (CNS) stimulant drug methylphenidate.