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Medical Dictionary Terms Beginning with M
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Malleus
Malleus: Tiny bone truly shaped like a minute mallet in the middle ear.more detail info...
Malrotated ear
Malrotated ear: An ear that is slanted more than usual. Technically, an ear is slanted when the angle of the slope of the auricle is more than 15 degrees from the perpendicular. Slanted ears are considered a minor anomaly. The presence of 2 or more minmore detail info...
Malrotation of the intestine
Malrotation of the intestine: Failure for the intestine to rotate normally during embryonic development.more detail info...
Mammary gland
Mammary gland: Breast (male or female).more detail info...
Mammogram
Mammogram: An x-ray of the breast.more detail info...
Managed care
Managed care: Any system that manages healthcare delivery to control costs.more detail info...
Mandible
Mandible: The mandible is the the bone of the lower jaw. The joint where the mandible meets the upper jaw at the temporal bone is called the temporomandibular joint.more detail info...
Maneuver, Valsalva
Maneuver, Valsalva: A maneuver in which one tries with force to exhale with the glottis closed (closing the windpipe). This impedes the return of venous blood to the heart. Named for Antonio Maria Valsalva, an Italian anatomist (1666-1723).more detail info...
Mania, symptoms
Mania, symptoms: Symptoms of mania include *Inappropriate elation. *Inappropriate irritability. *Severe insomnia. *Grandiose notions. *Increased talking speed and/or volume. *Disconnected and racing thoughts. *Increased sexual desire. *Markedly increasmore detail info...
Manic
Manic: Refers to a mood disorder in which a person seems &high&, euphoric, expansive, sometimes agitated, hyperexcitable, with flights of ideas and speech.more detail info...
Manic-depression
Manic-depression: Alternating moods of abnormal highs (mania) and lows (depression). Called bipolar disease because of the swings between these opposing poles in mood.more detail info...
Manic-depressive disease
Manic-depressive disease: See manic-depression.more detail info...
Manicheel tree
Manicheel tree: A dangerous tropical tree whose sap is highly poisonous and corrosive. The sap comes out when a leaf is crushed, a branch broken, or the fruit of the tree eaten. The manicheel is hazardous to stand under for shelter from the heat of the trmore detail info...
Map, contig
Map, contig: A map depicting the relative order of a linked library of small overlapping clones representing a complete chromosome segment.more detail info...
Map, linkage
Map, linkage: A map of the genes on a chromosome based on linkage analysis. A linkage map does not show the physical distances between genes but rather their relative positions, as determined by how often two gene loci are inherited together. The closemore detail info...
Map, physical
Map, physical: A map of the locations of identifiable landmarks on chromosomes. Physical distance is measured in base pairs. The physical map differs from the genetic map which is based purely on genetic linkage data. In the human genome, the lowest-remore detail info...
Map-dot-fingerprint type corneal dystrophy
Map-dot-fingerprint type corneal dystrophy: A disorder in which the cornea (the normally clear front window of the eye) shows geographic map-like lines, dots (or microcysts), and grayish fingerprint lines on examination with a slit-lamp, a device that fomore detail info...
Maple syrup urine disease (MSUD)
Maple syrup urine disease (MSUD): Hereditary disease due to deficiency of an enzyme involved in amino acid metabolism, characterized by urine that smells like maple syrup.more detail info...
Mapping
Mapping: Charting the location of genes on chromosomes.more detail info...
Mapping, gene
Mapping, gene: Charting the positions of genes on chromosome and learning the distance, in linkage units or physical units, between genes.more detail info...