Copy of `mondofacto - Online Medical Dictionary`
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mondofacto - Online Medical Dictionary
Category: Health and Medicine > Medical Dictionary
Date & country: 26/01/2008, UK
Words: 116197
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Zuckerkandl's convolutionSynonym for subcallosal gyrus ... A slender vertical whitish band immediately anterior to the lamina terminalis and anterior commissure; contrary to its name, it is not a cortical convolution but is the ventral continuation of the transparent septum. ... Synonym: area subcallosa, gyrus paraterminalis, gyrus subcallosus, pedunculus corporis callosi, c …
Zuckerkandl's fasciaThe posterior layer of the renal fascia. ... (05 Mar 2000) ...
zusammen1. Synonym: cis-. ... 2. A form of geometric isomerism with regards to carbon-carbon double bonds in which all four moieties attached to the carbons are different. If the substituents with the higher ranking (based on established rules) are on the same side of the double bond, Z is used. ... See: entgegen. ... Origin: Ger. Together ... (05 Mar 2000) …
zwiebackSweetened bread which has been baked twice, preferred for infant feeding during teething. ... Origin: Ger. Twice-baked ... (05 Mar 2000) ...
ZwischenfermentSynonym: glucose-6-phosphate dehydrogenase. ... Origin: Ger. Zwischen, between, + Ferment, fermentation ... (05 Mar 2000) ...
zwitter hypothesisThat an amphoteric molecule (e.g., an amino acid) has, at its isoelectric point, equal numbers of positive and negative charges, thus becoming a zwitterion. ... (05 Mar 2000) ...
zwittergentsDetergents that are zwitterionic; often used as surfactants and in the release of proteins from biomembranes. ... Synonym: zwitterionic detergent. ... Origin: zwitterion + detergent ... (05 Mar 2000) ...
zwitterion<chemistry> A zwitterion is a dipolar ion that is capable of carrying both a positive and negative charge simultaneously. ... The best example of this are amino acids which have a basic NH2 group and an acidic COOH group. What usually happens is that the H from the COOH group (carboxylic acid end) migrates to the NH2 group and this causes what …
zwitterionicDenoting a substance with the properties of a zwitterion; e.g., at pH value of 6.11, alanine is zwitterionic. ... (05 Mar 2000) ...
zwitterionic bufferBuffer whose structure can include opposite charges. ... Synonym: dipolar buffer. ... (05 Mar 2000) ...
zwitterionic detergentSynonym for zwittergents ... Detergents that are zwitterionic; often used as surfactants and in the release of proteins from biomembranes. ... Synonym: zwitterionic detergent. ... Origin: zwitterion + detergent ... (05 Mar 2000) ...
zwitterionic surfactantA dipolar surfactant. ... (05 Mar 2000) ...
zwitterionsSynonym: dipolar ions. ... See: zwitter hypothesis. ... Origin: Ger. Zwitter, hermaphrodite, mongrel + ion ... (05 Mar 2000) ...
zygalRelating to or shaped like a zygon or yoke; H-shaped. ... (05 Mar 2000) ...
zygal fissureA figure formed by two nearly parallel cerebral fissure's connected by a short fissure at right angles, forming an H. ... (05 Mar 2000) ...
zygapophysealRelating to a zygapophysis or articular process of a vertebra. ... (05 Mar 2000) ...
zygapophyseal jointsThe synovial joints between zygapophyses or articular processes of the vertebrae. ... Synonym: articulationes zygapophyseales, facet joints, interarticular joints, juncturae zygapophyseales. ... (05 Mar 2000) ...
zygapophysesArticular processes in vertebra. ... (05 Mar 2000) ...
zygionIn cephalometrics and craniometrics, the most lateral point of the zygomatic arch. ... Origin: G. A later form of zygon, yoke ... (05 Mar 2000) ...
zygo-A yoke, a joining. ... Origin: G. Zygon, yoke, zygosis, a joining ... (05 Mar 2000) ...
zygogenesis<cell biology> The production of a zygote. ... (11 May 1997) ...
zygoma<anatomy> The jugal, malar, or cheek bone. ... The zygomatic process of the temporal bone or the whole zygomatic arch. ... Origin: NL, fr. Gr, fr. To yoke, a yoke. ... (06 Mar 1998) ...
zygomatic<anatomy> Of, pertaining to, or in the region of, the zygoma. Zygomatic arch, the arch of bone beneath the orbit, formed in most mammals by the union of the malar, or jugal, with the zygomatic process of the temporal bone. In the lower vertebrates other bones may help to form it, and there may be two arches on each side of the skull, as in so …
zygomatic archThe arch formed by the temporal process of the zygomatic bone that joins the zygomatic process of the temporal bone. ... Synonym: arcus zygomaticus, cheek bone, malar arch, zygoma. ... (05 Mar 2000) ...
zygomatic boneA quadrilateral bone which forms the prominence of the cheek; it articulates with the frontal, sphenoid, temporal, and maxillary bone. ... Synonym: os zygomaticum, cheek bone, jugal bone, mala, malar bone, os malare, yoke bone, zygoma. ... (05 Mar 2000) ...
zygomatic branch of facial nerveBranches of facial nerve crossing upper cheek to supply orbicularis oculi muscle. ... Synonym: rami zygomatici nervi facialis. ... (05 Mar 2000) ...
zygomatic diameterThe extreme breadth of the skull at the zygomatic arches. ... (05 Mar 2000) ...
zygomatic fossaSynonym for infratemporal fossa ... The cavity on the side of the skull bounded laterally by the zygomatic arch and ramus of the mandible, medially by the lateral pterygoid plate, anteriorly by the zygomatic process of the maxilla, posteriorly by the articular tubercle of the temporal bone and the posterior border of the lateral pterygoid plate, and …
zygomatic fracturesFractures of the zygoma. ... (12 Dec 1998) ...
zygomatic nerve<anatomy, nerve> A branch of the maxillary nerve in the inferior orbital fissure through which it passes; it gives rise to two sensory branches, the zygomaticotemporal and zygomaticofacial, which supply the skin of the temporal and zygomatic regions and is continued as the communicating branch of the lacrimal nerve with the zygomatic nerve.
zygomatic process of frontal bone
The massive projection of the frontal bone that joins the zygomatic bone to form the lateral margin of the orbit. ... Synonym: processus zygomaticus ossis frontalis. ... (05 Mar 2000) ...
zygomatic process of maxilla
The rough projection from the maxilla that articulates with the zygomatic bone. ... Synonym: malar process, processus zygomaticus maxillae. ... (05 Mar 2000) ...
zygomatic process of temporal bone
The anterior process of the temporal bone that articulates with the temporal process of the zygomatic bone to form the zygomatic arch. ... Synonym: processus zygomaticus ossis temporalis. ... (05 Mar 2000) ...
zygomatic region
The region of the face outlined by the zygomatic bone; the prominence above the cheek. ... Synonym: regio zygomatica. ... (05 Mar 2000) ...
zygomatico-orbital
Relating to the zygomatic bone and the orbit. ... (05 Mar 2000) ...
zygomatico-orbital artery
<anatomy, artery> Origin, superficial temporal, sometimes middle temporal; distribution, orbicularis oculi muscle and portions of the orbit; anastomoses, lacrimal and palpebral branches of ophthalmic. ... Synonym: arteria zygomatico-orbitalis. ... (05 Mar 2000) ...
zygomatico-orbital foramen
The common opening on the orbital surface of the zygomatic bone of the canals transmitting the zygomaticofacial and zygomaticotemporal nerves; sometimes each of these canals has a separate opening on the orbital surface. ... Synonym: foramen zygomatico-orbitale. ... (05 Mar 2000) ...
zygomaticoauricular
Relating to the zygomatic bone and the auricle. ... (05 Mar 2000) ...
zygomaticoauricular index
The ratio between the zygomatic and the auricular diameters of the skull or head. ... (05 Mar 2000) ...
zygomaticoauricularis
Synonym for anterior auricular ... <anatomy, muscle> Origin, galea aponeurotica; insertion, cartilage of auricle; action, draws pinna of ear upward and forward; nerve supply, facial. Considered by some to be the anterior part of the temporoparietal muscle. ... Synonym: musculus auricularis anterior, musculus attrahens aurem, musculus attrahens …
zygomaticofacial
Relating to the zygomatic bone and the face. ... (05 Mar 2000) ...
zygomaticofacial foramen
The opening on the lateral surface of the zygomatic bone below the orbital margin that transmits the zygomaticofacial nerve. ... Synonym: foramen zygomaticofaciale, malar foramen. ... (05 Mar 2000) ...
zygomaticofrontal
Relating to the zygomatic and frontal bones. ... (05 Mar 2000) ...
zygomaticomaxillary
Relating to the zygomatic bone and the maxilla. ... (05 Mar 2000) ...
zygomaticomaxillary suture
Articulation of the zygomatic bone with the zygomatic process of the maxilla. ... Synonym: sutura zygomaticomaxillaris. ... (05 Mar 2000) ...
zygomaticosphenoid
Relating to the zygomatic and sphenoid bones. ... (05 Mar 2000) ...
zygomaticotemporal
Relating to the zygomatic and temporal bones. ... (05 Mar 2000) ...
zygomaticotemporal foramen
The opening, on the temporal surface of the zygomatic bone, of the canal that gives passage to the zygomaticotemporal nerve. ... Synonym: foramen zygomaticotemporale. ... (05 Mar 2000) ...
zygomaticotemporal suture
Line of junction of the zygomatic process of the temporal and the temporal process of the zygomatic bone. ... Synonym: sutura temporozygomatica, sutura zygomaticotemporalis, temporozygomatic suture. ... (05 Mar 2000) ...
zygomaticus major
<anatomy, muscle> Origin, zygomatic bone anterior to temporozygomatic suture; insertion, muscles at angle of mouth; action, draws upper lip upward and laterally; nerve supply, facial. ... Synonym: musculus zygomaticus major, greater zygomatic muscle, musculus zygomaticus. ... (05 Mar 2000) ...
zygomaticus minor
<anatomy, muscle> Origin, zygomatic bone posterior to zygomaticomaxillary suture; insertion, orbicularis oris of upper lip; action, draws upper lip upward and outward; nerve supply, facial. ... Synonym: musculus zygomaticus minor, caput zygomaticum quadrati labii superioris, lesser zygomatic muscle. ... (05 Mar 2000) ...
zygomaxillare
A craniometric point located externally at the lowest extent of the zygomaticomaxillary suture. ... Synonym: key ridge, zygomaxillary point. ... (05 Mar 2000) ...
zygomaxillary
Relating to the zygomatic bone and the maxilla. ... (05 Mar 2000) ...
zygomaxillary point
Synonym for zygomaxillare ... A craniometric point located externally at the lowest extent of the zygomaticomaxillary suture. ... Synonym: key ridge, zygomaxillary point. ... (05 Mar 2000) ...
zygomorphic
<botany> Of a flower or calyx or corolla: symmetrical about one plane only, usually the plane that bisects the flower vertically. ... Compare: actinomorphic. ... (12 Nov 1997) ...
zygomycetes
<fungus> A class of fungi that usually has a coenocytic mycelium with chitinous cell walls. Sexual reproduction normally involves the formation of zygospores.The group lacks motile spores. ... (09 Oct 1997) ...
zygomycosis
<disease, microbiology> A fungal infection caused by infection with various fungi from the class, Zygomycetes. The organism is widely distributed through air, water and soil. This infection occurs predominately in the immunocompromised patient, burn patients and those on steroid therapy. ... The most common manifestation is an orbital cellulit …
Zygomycota
<fungus> A division of true fungi that includes a wide variety of species, the best known being the black bread mould Rhizopus. Other species of bread moulds are used to make tempeh and sufu, both soybean dishes. ... (11 May 1997) ...
zygomycotina
A subdivision of fungi, formerly included in the phycomycetes, usually saprophytic or parasitic, especially for insects. ... (12 Dec 1998) ...
zygon
The short crossbar connecting the branches of a zygal fissure. ... Origin: G. Crossbar, yoke ... (05 Mar 2000) ...
zygonema
Synonym for zygotene ... <cell biology> Classic term for the second stage of the prophase of meiosis I, during which the homologous chromosomes start to pair. ... (18 Nov 1997) ...
zygopodium
The distal intermediate segment of the limb skeleton, i.e., radius and ulna, tibia and fibula. ... Origin: zygo-+ G. Podion, small foot ... (05 Mar 2000) ...
zygosity
The nature of the zygotes from which individuals are derived; e.g., whether by separation of the division of one zygote (monozygotic), in which case they will be genetically identical, or from two separate fertilised ova (dizygotic). ... (05 Mar 2000) ...
zygospore
<microbiology> A fungal spore produced by the fusion of two similar gametes or hyphae of the Zygomycetes. ... (12 Nov 1997) ...
zygote
<biology, genetics> A single diploid cell resulting from the fusion of male and female gametes at fertilization (sperm and ovum). ... (11 May 1997) ...
zygote intra-fallopian transfer
<gynaecology> In vitro fertilization with a transfer of the zygote into the fallopian tube, a combination of in vitro fertilization and gamete intra-fallopian transfer. ... An assisted reproduction technique consisting of hormonal stimulation of the ovaries, laparoscopic follicular aspiration of oocytes, in-vitro fertilization, and intra-fallo …
zygotene
<cell biology> Classic term for the second stage of the prophase of meiosis I, during which the homologous chromosomes start to pair. ... (18 Nov 1997) ...
zygotic
Pertaining to a zygote, or to zygosis. ... (05 Mar 2000) ...
zygotic effect gene
<genetics> A gene whose phenotype is dependent on the genotype of the zygote, rather than the genotype of the mother. ... See: maternal effect gene. ... (18 Nov 1997) ...
zygotic induction
<cell biology> A lysogenic process in which a prophage is transmitted to a cell that does not have a phage repressor protein. ... (09 Oct 1997) ...
zygotic lethal gene
<genetics> A mutated or otherwise defective gene at embryonic or larval stages. ... (06 May 1997) ...
zygotoblast
Synonym: sporozoite. ... Origin: G. Zygotos, yoked, + blastos, germ ... (05 Mar 2000) ...
zygotomere
Synonym: sporoblast. ... Origin: G. Zygotos, yoked, + meros, part ... (05 Mar 2000) ...
zym-
See: zymo-. ... (05 Mar 2000) ...
zymase
<enzyme> An enzyme complex found in yeast extract that is used to catalyse glycolysis and other reactions in fermentation. ... (06 May 1997) ...
zymo-
Zym- ... Fermentation, enzymes. ... Origin: G. Zyme, leaven ... (05 Mar 2000) ...
zymodeme
An isoenzyme pattern, as identified by isoenzyme electrophoresis. ... Origin: zymo-+ G. Demos, populace ... (05 Mar 2000) ...
zymogen
<biochemistry> An inactive precursor of an enzyme, particularly a proteolytic enzyme. ... Synthesised in the cell and secreted in this safe form, then converted to the active form by limited proteolytic cleavage. ... (18 Nov 1997) ...
zymogen granule
<cell biology> Secretory vesicle containing an inactive precursor (zymogen). The contents are often very condensed. ... (18 Nov 1997) ...
zymogenesis
Transformation of a proenzyme (zymogen) into an active enzyme. ... Origin: zymo-+ G. Genesis, production ... (05 Mar 2000) ...
zymogenic
<biology> Pertaining to, or formed by, a zymogene. ... Capable of producing a definite zymogen or ferment. ... <biology> Zymogenic organism, a microorganism, such as the yeast plant of the Bacterium lactis, which sets up certain fermentative processes by which definite chemical products are formed; distinguished from a pathogenic organism …
zymogenic cell
<pathology> Cells of the basal part of the gastric glands of the stomach. ... They contain extensive rough endoplasmic reticulum and zymogen granules and secrete pepsinogen, the inactive precursor of pepsin and rennin. ... (18 Nov 1997) ...
zymogenous
<microbiology> Fermentation production. In environmental microbiology, the term refers to microorganisms, often transient or alien, that respond rapidly by enzyme production and growth when simple organic food sources become available. ... (09 Oct 1997) ...
zymogram
Strips of paper, gels, etc. In which the locations of enzymes, separated electrophoretically or by other means, are demonstrated by histochemical methods. ... Origin: zymo-+ G. Gramma, something written ... (05 Mar 2000) ...
zymohexase
An obsolete term for fructose-bisphosphate aldolase. ... (05 Mar 2000) ...
zymologist
An obsolete term for enzymologist. ... (05 Mar 2000) ...
zymology
An obsolete term for enzymology. ... (05 Mar 2000) ...
zymolyase
<chemical> Commercial prep from arthrobacter used to remove cell walls from neurospora crassa; contains a beta-glucanase (z-glucanase) and a protease (z-protease) ... Chemical name: glucanase, endo-1,3-beta-, zymolyase ... (26 Jun 1999) ...
zymomonas
A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that is not known to be pathogenic for man, animals, or plants. Its organisms are spoilers for beers and ciders and in sweet english ciders they are the causative agents of a secondary fermentation known as 'cider sickness.' the species z. Mobilis is used for experiments in mole …
zymoplastic substance
Synonym for thromboplastin ... <haematology> Traditional name for substance in plasma that converts prothrombin to thrombin. Now known not to be a single substance. (See thrombin). ... (18 Nov 1997) ...
zymosan
<biology, plant biology> Particulate yeast cell wall polysaccharide (mannan rich) that will activate complement in serum through the alternate pathway. ... Becomes coated with C3b/C3bi and is therefore a convenient opsonised particle, also leads to C5a production in the serum. ... (18 Nov 1997) ...
zymoscope
<instrument> An instrument measuring CO2 evolved and, therefore, the fermenting power of yeast. ... Origin: zymo-+ G. Skopeo, to view ... (05 Mar 2000) ...
zymosis
<cell biology> Fermentation. Any infectious disease. ... (06 May 1997) ...
zymosterol
<biochemistry> An intermediate in the biosynthesis of cholesterol from lanosterol. ... Chemical name: 5a-Cholesta-8,24-dien-3b-ol ... (05 Mar 2000) ...
zymotic
1. Of, pertaining to, or caused by, fermentation. ... 2. <medicine> Designating, or pertaining to, a certain class of diseases. See Zymotic disease. ... (01 Mar 1998) ...
zymotic papilloma
Synonym for yaws ... <medicine> A disease, occurring in the Antilles and in Africa, characterised by yellowish or reddish tumours, of a contagious character, which, in shape and appearance, often resemble currants, strawberries, or raspberries. There are several varieties of this disease, variously known as framboesia, pian, verrugas, and crab …
zyxin
<cell biology> Protein (82 kD) found at the adherens junction. Interacts with _ actinin. Found in fibroblasts, smooth muscle and pigmented retinal epithelium. ... (18 Nov 1997) ...
