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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

mittelschmerz
<gynaecology> One-sided lower abdominal (pelvic) pain that occurs at or around the time of ovulation (midcycle). Thought to be secondary to a stretching of the ovarian capsule and subsequent capsular rupture during expulsion of the egg. Inevitably, there is some bleeding associated with this normal month function that can inflame the peritone …

mivacurium
A neuromuscular blocking agent resembling d-tubocurarine, but having a shorter duration of action. ... (05 Mar 2000) ...

mixed agglutination
Synonym for mixed agglutination reaction ... Immune agglutination in which the aggregates contain cells of two different kinds but with common antigenic determinants; when used to identify isoantigens, the test cells are exposed to appropriate isoantibody, washed, and then mixed with indicator erythrocytes that combine with free sites on the test ce …

mixed agglutination reaction
Immune agglutination in which the aggregates contain cells of two different kinds but with common antigenic determinants; when used to identify isoantigens, the test cells are exposed to appropriate isoantibody, washed, and then mixed with indicator erythrocytes that combine with free sites on the test cell-attached isoantibody. ... Synonym: mixed a …

mixed aphasia
Synonym for global aphasia ... In which all aspects of speech and communication are severely impaired. at best, patients can understand or speak only a few words or phrases; they cannot read or write. ... Synonym: mixed aphasia, total aphasia. ... (05 Mar 2000) ...

mixed astigmatism
Astigmatism in which one meridian is hyperopic while the one at right angle to it is myopic. ... (05 Mar 2000) ...

mixed beat
Synonym for fusion beat ... A beat triggered by more than a single electrical impulse, when the wave fronts coincide to act together on a single final pathway of activity; in the electrocardiogram, the atrial or ventricular complex when either atria or ventricles are activated jointly by two simultaneous or nearly simultaneous invading impulses. ... …

mixed cell leukaemia
Term infrequently used as a designation for granulocytic leukaemia, thereby emphasizing the occurrence of different types of cells in the myeloid series (i.e., neutrophilic, eosinophilic, and basophilic granulocytes), in contrast to the comparatively monotonous pattern observed in lymphocytic and monocytic leukaemia. ... (05 Mar 2000) ...

mixed chancre
A sore resulting from simultaneous inoculation of a site with syphilis and chancroid. ... (05 Mar 2000) ...

mixed connective tissue disease
<syndrome> A syndrome with overlapping clinical features of systemic lupus erythematosus, scleroderma, polymyositis, and Raynaud's phenomenon. ... The disease is differentially characterised by high serum titres of antibodies to ribonuclease-sensitive extractable (saline soluble) nuclear antigen (nuclear ribonucleoprotein) and a speckled epide …

mixed dentition
<dentistry> The situation when both deciduous and permanent teeth are present. ... (08 Jan 1998) ...

mixed disulfide
<chemistry> Disulfide which is not symmetric on both sides of the -s-s- linkage; e.g., the disulfide formed between coenzyme A and glutathione or between cysteine and coenzyme A or glutathione. ... Synonym: asymmetric disulfide. ... (05 Mar 2000) ...

mixed esotropia
<ophthalmology> That type of esotropia in which both accommodative and nonaccommodative factors are present. ... (05 Mar 2000) ...

mixed expired gas
<physiology> One or more complete breaths of expired gas coming thoroughly mixed from the dead space and the alveoli. ... (05 Mar 2000) ...

mixed function oxidases
<enzyme> Catalyse the insertion of one oxygen atom of molecular oxygen into the organ substrate. Require a second substrate to donate electrons for the reduction of the second atom in the oxygen molecule to water. ... Registry number: EC 1.13.12. ... (12 Dec 1998) ...

mixed gland
A gland that contains both serous and mucous secretory units, a gland that is both exocrine and endocrine, e.g., the pancreas. ... (05 Mar 2000) ...

mixed glioma
<tumour> A glioma comprised of two or more malignant elements, most frequently astrocytoma and oligodendroglioma. ... (05 Mar 2000) ...

mixed hyperlipaemia
Synonym for type V familial hyperlipoproteinaemia ... Hyperlipoproteinaemia characterised by increased plasma levels of chylomicrons, VLDL, pre-beta-lipoproteins, and triglycerides, and slight rise of cholesterol on a normal diet, with beta-lipoproteins normal; may be accompanied by bouts of abdominal pain, hepatosplenomegaly, susceptibility to athe …

mixed hyperlipidemia
mixed hyperlipoproteinaemia familial, type 5 hyperlipidemia ...

mixed hypoglycaemia
Hypoglycaemia due to more than one cause. ... (05 Mar 2000) ...

mixed infection
Infection by more than one variety of pathogenic microorganisms. ... (05 Mar 2000) ...

mixed lymphocyte culture
<investigation> Test to determine whether a patients and donor's white blood cells interact adversely. Often used to determine whether a person would be a suitable bone marrow donor for a particular patient. ... (16 Dec 1997) ...

mixed lymphocyte culture test
Measure of histocompatibility at the hl-a locus. Peripheral blood lymphocytes from two individuals are mixed together in tissue culture for several days. Lymphocytes from incompatible individuals will stimulate each other to proliferate significantly (measured by tritiated thymidine uptake) whereas those from compatible individuals will not. In the …

mixed mesodermal tumour
A sarcoma of the body of the uterus arising in older women, composed of more than one mesenchymal tissue, especially including striated muscle cells. ... Synonym: malignant mixed mullerian tumour. ... (05 Mar 2000) ...

mixed nerve
<anatomy, nerve> A nerve containing both afferent and efferent fibres. ... (05 Mar 2000) ...

mixed opioid agonist-antagonist
<pharmacology> A compound that has an affinity for two or more types of opioid receptors and blocks opioid effects on one receptor type while producing opioid effects on a second receptor type. ... (13 Nov 1997) ...

mixed paralysis
Combined motor and sensory paralysis. ... (05 Mar 2000) ...

mixed sleep apnoea
<chest medicine> A form of sleep apnoea where there is exists a combination of obstructive and central sleep apnoea syndromes. ... (13 Nov 1997) ...

mixed thrombus
A laminated thrombus, the layers of different ages being of different colour or consistency. ... Synonym: stratified thrombus. ... (05 Mar 2000) ...

mixed tide
<ecology, marine biology> Tidal cycle in which there are usually two high and two low tides during a day. ... (13 Nov 1997) ...

mixed tumour
A tumour composed of two or more varieties of tissue. ... (05 Mar 2000) ...

mixed tumour of salivary gland
A tumour composed of salivary gland epithelium and fibrous tissue with mucoid or cartilaginous areas. ... Synonym: pleomorphic adenoma. ... (05 Mar 2000) ...

mixed tumour of skin
Synonym for chondroid syringoma ... <tumour> A benign tumour of sweat glands with a mucoid stroma showing cartilaginous metaplasia. ... Synonym: mixed tumour of skin. ... (05 Mar 2000) ...

mixed tumour, malignant
A malignant tumour composed of more than one type of neoplastic tissue. ... (12 Dec 1998) ...

mixed tumour, mesodermal
A sarcoma of the body of the uterus arising in older women, composed of more than one mesenchymal tissue, especially including striated muscle cells. It is associated with previous pelvic radiation exposure in 20% of patients. ... (12 Dec 1998) ...

mixed tumour, mullerian
A tumour, basically a carcinoma with a single sarcoma such as leiomyosarcoma or angiosarcoma or multiple sarcomas of uterine origin. The role of oestrogen has been postulated as a possible aetiological factor in this tumour. (holland et al., cancer medicine, 3d ed, p1703) ... (12 Dec 1998) ...

mixing
The mingling or blending of particles or components, especially of different kinds. ... Phenotypic mixing, the condition in which virus particles released from a cell that is infected with two different viruses has components from both the infecting agents. ... (05 Mar 2000) ...

mixotroph
An organism able to assimilate organic compounds as carbon sources while using inorganic compounds as electron donors. ... Compare: autotroph, heterotroph. ... (09 Oct 1997) ...

mixotrophy
The property of certain microorganisms that can assimilate organic compounds as carbon sources but not as energy sources. ... Origin: G. Mixis, mixture, fr. Mignumi, to mix, + trophe, nourishment ... (05 Mar 2000) ...

Mixter clamp
A right angle clamp. ... (05 Mar 2000) ...

mixture
<chemistry> A material of variable composition that contains two or more substances. ... (09 Jan 1998) ...

Miyagawa bodies
A term previously used to refer to Chlamydia trachomatis (Miyagawanella lymphogranulomatosis), the elementary body's that develop in the intracytoplasmic microcolonies of lymphogranuloma venereum. ... (05 Mar 2000) ...

Miyagawa, Yoneji
<person> Japanese bacteriologist, 1885-1959. ... See: Miyagawanella, Miyagawa bodies. ... (05 Mar 2000) ...

Miyagawanella
Formerly considered a genus of Chlamydiaceae, but now synonymous with Chlamydia. ... Origin: Y. Miyagawa ... (05 Mar 2000) ...

MK
<abbreviation> Menaquinone. ... (05 Mar 2000) ...

MK-6
<abbreviation> Menaquinone-6. ... (05 Mar 2000) ...

MK-7
<abbreviation> Menaquinone-7. ... (05 Mar 2000) ...

mL
Ml ... <abbreviation> Milliliter. ... (05 Mar 2000) ...

MLC
Synonym for mixed lymphocyte culture ... <investigation> Test to determine whether a patients and donor's white blood cells interact adversely. Often used to determine whether a person would be a suitable bone marrow donor for a particular patient. ... (16 Dec 1997) ...

MLC test
Synonym for mixed lymphocyte culture test ... Measure of histocompatibility at the hl-a locus. Peripheral blood lymphocytes from two individuals are mixed together in tissue culture for several days. Lymphocytes from incompatible individuals will stimulate each other to proliferate significantly (measured by tritiated thymidine uptake) whereas those …

MLD
Mld ... <abbreviation> Minimal lethal dose. ... (05 Mar 2000) ...

mlRNA
<abbreviation> Messenger-like RNA. ... (05 Mar 2000) ...

Mlt38 lytic transglycosylase
<enzyme> Active against poly(murnac-glcnac) strands ... Registry number: EC 2.4.- ... Synonym: membrane-bound lytic transglycosylase 38-kD, mlt38 protein, mlta gene product ... (26 Jun 1999) ...

MM
Synonym for meningomyelocele ... <embryology, paediatrics> A congenital defect that is characterised by the protrusion of the membranes and cord through a defect in the vertebral column. ... (27 Sep 1997) ...

mm virus
A strain of encephalomyocarditis virus, a species of cardiovirus, causing neurological disease in the mouse. ... (12 Dec 1998) ...

mmbtu
One million British thermal units. ... (05 Dec 1998) ...

mmHg
Abbreviation for millimetres of mercury to measure the partial pressure of a gas. ... (27 Sep 1997) ...

MMK4 kinase
<enzyme> A 44 kD mitogen-activated kinase from alfalfa, activated in response to mechanical stimulation ... Registry number: EC 2.7.10.- ... Synonym: p44(mmk4) kinase ... (26 Jun 1999) ...

MMMT
<abbreviation> Malignant mixed mullerian tumour or malignant mixed mesodermal tumour. ... (05 Mar 2000) ...

mmol
<abbreviation> Millimole. ... (05 Mar 2000) ...

mmpi
A personality inventory consisting of statements to be asserted or denied by the individual. The patterns of response are characteristic of certain personality attributes. ... (12 Dec 1998) ...

MMR
Measles, mumps, rubella vaccine. ... (12 Dec 1998) ...

MMR vaccine
<drug> The mumps, measles and rubella vaccine is recommended in all infants. Typically given twice, 15 months and at 4-6 years. ... (27 Sep 1997) ...

Mn
Symbol for manganese. ... (05 Mar 2000) ...

MN blood group antigens
<haematology, immunology> A pair of blood group antigens governed by genes that segregate independently of the ABO locus. The alleles are codominant and there are three types MM, NN and MN. Glycophorin has M or N activity and this is associated with oligosaccharides attached to the amino terminal portion of the molecule. M type glycophorin di …

mnaemic hypothesis
The theory that stimuli or irritants leave definite traces (engrams) on the protoplasm of the animal or plant, and when these stimuli are regularly repeated they induce a habit which persists after the stimuli cease; assuming that the germ cells share with the nerve cells in the possession of engrams, acquired habits may thus be transmitted to the …

mnaemic theory
Synonym for mnaemic hypothesis ... The theory that stimuli or irritants leave definite traces (engrams) on the protoplasm of the animal or plant, and when these stimuli are regularly repeated they induce a habit which persists after the stimuli cease; assuming that the germ cells share with the nerve cells in the possession of engrams, acquired habi …

MND
<abbreviation> Motor neuron disease. ... (05 Mar 2000) ...

mneme
1. The enduring quality in the mind that accounts for the facts of memory; the engram of a specific experience. ... Origin: G. Mneme, memory ... (05 Mar 2000) ...

mnemenic
Mnaemic ... Relating to memory. ... (05 Mar 2000) ...

mnemism
Synonym: mnaemic hypothesis. ... Origin: G. Mneme, memory ... (05 Mar 2000) ...

mnemonic
Synonym for anamnestic ... 1. Assisting the memory. ... Synonym: mnemonic. ... 2. Relating to the medical history of a patient. ... (05 Mar 2000) ...

mnemonics
The art of improving the memory; a system for aiding the memory. ... Origin: G. Mnemonikos, mnemonic, pertaining to memory ... (05 Mar 2000) ...

MNSs blood group
See Blood Groups appendix. ... (05 Mar 2000) ...

mnss blood-group system
A system of universal human blood group isoantigens with many associated subgroups. The m and n traits are codominant and the s and s traits are probably very closely linked alleles, including the u antigen. This system is most frequently used in paternity studies. ... (12 Dec 1998) ...

Mo
Symbol for molybdenum. ... (05 Mar 2000) ...

Mo 1
M_2 integrin of leucocytes. ... (18 Nov 1997) ...

moa
<paleontology> Any one of several very large extinct species of wingless birds belonging to Dinornis, and other related genera, of the suborder Dinornithes, found in New Zealand. ... They are allied to the apteryx and the ostrich. They were probably exterminated by the natives before New Zealand was discovered by Europeans. Some species were m …

MoAb
<abbreviation> Monoclonal antibody. ... (05 Mar 2000) ...

mobile
1. Capable of being moved; not fixed in place or condition; movable. 'Fixed or else mobile.' ... 2. Characterised by an extreme degree of fluidity; moving or flowing with great freedom; as, benzine and mercury are mobile liquids; opposed to viscous, viscoidal, or oily. ... 3. Easily moved in feeling, purpose, or direction; excitable; changeable; fick …

mobile genetic element
Synonym for transposon ... <molecular biology> Small, mobile DNA sequences that can replicate and insert copies at random sites within chromosomes. They have nearly identical sequences at each end, oppositely oriented (inverted) repeats and code for the enzyme, transposase, that catalyses their insertion. ... Bacteria have two types of transpos …

mobile health units
Movable facilities in which diagnostic and therapeutic services are provided to the community. ... (12 Dec 1998) ...

mobile ion carrier
Synonym for ionophore ... <chemistry> A molecule that allows ions to cross lipid bilayers. There are two classes: carriers and channels. Carriers, like valinomycin, form cage like structures around specific ions, diffusing freely through the hydrophobic regions of the bilayer. Channels, like gramicidin, form continuous aqueous pores through th …

mobile part of nasal septum
The anterior movable part of the nasal septum formed by the medial crus of the greater alar cartilage on each side. ... Synonym: pars mobilis septi nasi, septum mobile nasi. ... (05 Mar 2000) ...

mobile spasm
A tonic spasm occurring in spastic infantile hemiplegia on attempted movement. ... (05 Mar 2000) ...

mobilisation
<surgery> The process of making a fixed part or stored substance mobile, as by separating a part from surrounding structures to make it accessible for an operative procedure or by causing release into the circulation for body use of a substance stored in the body. ... (18 Nov 1997) ...

mobilise
1. To liberate material stored in the body; more specifically, to move a substance from tissue stores into the bloodstream. ... 2. To excite quiescent material to physiologic activity. ... Origin: Fr. Mobiliser, to liberate, make ready, fr. L. Mobilis, movable ... (05 Mar 2000) ...

mobility
Capability of movement, of being moved or of flowing freely. ... Origin: L. Mobilitas ... (18 Nov 1997) ...

mobilization
1. Making movable; restoring the power of motion in a joint. ... 2. The act or the result of the act of mobilizing; exciting a hitherto quiescent process into physiologic activity. ... Origin: see mobilise ... (05 Mar 2000) ...

mobiluncus
<bacteria> A genus of gram-negative, anaerobic, rod-shaped bacteria. Its organisms are found in the human vagina, particularly in association with gardnerella vaginalis in cases of bacterial vaginosis. ... (12 Dec 1998) ...

Mobitz block
Second degree atrioventricular block in which there is a ratio of two or more atrial deflections (P waves) to ventricular responses. ... Mobitz types of atrioventricular block, type I, the dropped beat of the Wenckebach phenomenon; type II, a dropped cardiac cycle that occurs without alteration in the conduction of the preceding intervals. ... (05 Ma …

Mobitz, Woldemar
<person> German cardiologist, *1889. ... See: Mobitz types of atrioventricular block. ... (05 Mar 2000) ...

Mobius, Paul
<person> German physician, 1853-1907. ... See: Mobius' sign, Mobius' syndrome, Leyden-Mobius muscular dystrophy. ... (05 Mar 2000) ...

Mobius' sign
<clinical sign> Impairment of ocular convergence in Graves' disease. ... (05 Mar 2000) ...

Mobius' syndrome
<syndrome> A developmental bilateral facial paralysis usually associated with oculomotor or other neurological disorders. ... Synonym: congenital facial diplegia. ... (05 Mar 2000) ...

moccasin
1. A shoe made of deerskin, or other soft leather, the sole and upper part being one piece. It is the customary shoe worn by the American Indians. ... 2. <zoology> A poisonous snake of the Southern United States. The water moccasin (Ancistrodon piscivorus) is usually found in or near water. Above, it is olive brown, barred with black; beneath, …

mock
Imitating reality, but not real; false; counterfeit; assumed; sham. 'That superior greatness and mock majesty. ... <botany> ' (Spectator) Mock bishop's weed, a genus of American and Asiatic shrubs (Philadelphus), with showy white flowers in panicled cymes. P. Coronarius, from Asia, has fragrant flowers; the American kinds are nearly scentless. …

moclobemide
<drug> This drug is used to treat depression. Its a short-acting, reversible inhibitor of monoamine oxidase, and it is a benzamide derivative which inhibits the deamination of serotonin, norepinephrine and dopamine. ... (09 Oct 1997) ...

MOD
<abbreviation> Mesiodistocclusal. ... (05 Mar 2000) ...

modal alteration
In electric irritability, a change in the mode of response of degenerated muscle to electric stimulation, the contraction being sluggish instead of quick. ... (05 Mar 2000) ...