Copy of `mondofacto - Online Medical Dictionary`

The wordlist doesn't exist anymore, or, the website doesn't exist anymore. On this page you can find a copy of the original information. The information may have been taken offline because it is outdated.


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


segmentation cavity
Synonym for blastocele ... The cavity in the blastula of a developing embryo. ... Synonym: blastocoele, cleavage cavity, segmentation cavity. ... Origin: blasto-+ G. Koilos, hollow ... (05 Mar 2000) ...

segmentation gene
<molecular biology> Genes required for the establishment of segmentation in the embryo. In Drosophila about 20 such genes are required. ... A development pattern of the embryo of the fruit fly Drosophila where the embryo looks like a stack of discs. Each disc is a segment, and each segment consists of two compartments (an anterior and posterio …

segmentation nucleus
The compound nucleus in the impregnated ovum, formed by conjugation of the nuclei of the ovum and spermatozoon (female and male pronuclei), the zygote nucleus after it commences the first cleavage division. ... (05 Mar 2000) ...

segmentectomy
<procedure> Excision of a segment of any organ or gland. ... (05 Mar 2000) ...

segmented cell
A polymorphonuclear leukocyte matured beyond the band cell so that two or more lobes of the nucleus occur. ... (05 Mar 2000) ...

segmented leukocyte
Any mature polymorphonuclear leukocyte, especially a neutrophilic leukocyte. ... (05 Mar 2000) ...

segmented neutrophil
A fully matured neutrophil that has at least 2 (and as many as 5) distinct lobes in the nucleus and manifests active ameboid motion. ... Synonym: mature neutrophil. ... (05 Mar 2000) ...

segmenter
A schizont; usually applied to the malaria parasite developing in a red blood cell after having undergone nuclear and cytoplasmic division, just before cell rupture and release of the merozoites. ... (05 Mar 2000) ...

Segmentina
A genus of freshwater pulmonate snails (family Planorbidae, subfamily Segmentininae); includes the species Segmentina hemisphaerula, an important intermediate host of Fasciolopsis buski. ... Origin: L. Segmentum, fr. Seco, to cut ... (05 Mar 2000) ...

segmenting body
Synonym for schizont ... A sporozoan trophozoite (vegetative form) that reproduces by schizogony, producing a varied number of daughter trophozoites or merozoites. ... See: meront, segmenter. ... Synonym: agamont, segmenting body. ... Origin: schizo-+ G. On (ont-), a being ... (05 Mar 2000) ...

segments of liver
Synonym for hepatic segments ... Territories of the liver with independent portobilioarterial distribution or independent venous drainage. The naming of segments in the NA is based upon the portobilioarterial distribution. ... See: anterior segment, lateral segment, medial segment, posterior segment. ... Synonym: segmenta hepatis, segments of liver.
segments of spinal cord
Portions of the spinal cord corresponding to the line of attachment of the roots of the individual spinal nerves. These are the cervical spinal cord segments [C1-C8]; the thoracic spinal cord segments [T1-T12]; the lumbar spinal cord segments ... Origin: L1-L5]; the sacral spinal cord segments [S1-S5]; and the coccygeal spinal cord segments [Co1-Co3 …

segments of spleen
Splenic territories receiving independent arterial supply or drained by independent roots of the splenic vein. ... Synonym: segmenta lienis. ... (05 Mar 2000) ...

segmentum
Synonym: segment. ... Origin: L. Segment ... (05 Mar 2000) ...

segmentum anterius
Synonym for anterior segment ... A delimited part or section of an organ or other structure which lies in front of or ventral to the other similar parts or sections. 1) segmentum anterius (hepar); the anterior segment of the right lobe of the liver. 2) segmentum anterius (pulmo dexter et sinister); [S 3]; the anterior segment of the superior lobe of …

segmentum anterius inferius
Synonym for anterior inferior segment ... Anterior inferior segment of kidney. ... Synonym: segmentum anterius inferius. ... (05 Mar 2000) ...

segmentum anterius superius
Synonym for anterior superior segment ... Anterior superior segment of kidney. ... Synonym: segmentum anterius superius. ... (05 Mar 2000) ...

segmentum apicale
Apical segment of the inferior lobe of the right and left lungs. ... See: apical segment ... (05 Mar 2000) ...

segmentum apicoposterius
Synonym for apicoposterior segment ... Apicoposterior segment of superior lobe of left lung, composed of two segments and wedged between the anterior segment of the upper lobe and the oblique fissure. ... Synonym: segmentum apicoposterius. ... (05 Mar 2000) ...

segmentum basale anterius
Synonym for anterior basal segment ... Anterior basal segment of inferior lobe of right and left lung; lies between middle lobe and diaphragm. ... Synonym: segmentum basale anterius. ... (05 Mar 2000) ...

segmentum basale laterale
Synonym for lateral basal segment ... Lateral basal segment of inferior lobe of right and left lung; between anterior and posterior basal segments. ... Synonym: segmentum basale laterale. ... (05 Mar 2000) ...

segmentum basale mediale
Synonym for medial basal segment ... Cardiac segment; medial basal segment of inferior lobe of right and left lung; can only be seen from medial and inferior surfaces since it does not reach lateral surface of lung. ... Synonym: segmentum basale mediale, segmentum cardiacum, cardiac segment. ... (05 Mar 2000) ...

segmentum basale posterius
Synonym for posterior basal segment ... Posterior basal segment of inferior lobe of right and left lungs; lies adjacent to vertebral column below superior segment. ... Synonym: segmentum basale posterius. ... (05 Mar 2000) ...

segmentum bronchopulmonale
Synonym for bronchopulmonary segment ... The largest subdivision of a lobe of the lung; it is supplied by a direct tertiary (lobular) bronchus and a tertiary branch of the pulmonary artery; it is separated from adjacent segments by connective tissue septa. ... Synonym: segmentum bronchopulmonale. ... (05 Mar 2000) ...

segmentum cardiacum
An alternate term for medial basal segment. ... (05 Mar 2000) ...

segmentum inferius
inferior segment ...

segmentum internodale
Synonym for internodal segment ... The portion of a myelinated nerve fibre between two successive nodes. ... Synonym: interannular segment, internode, Ranvier's segment, segmentum internodale. ... (05 Mar 2000) ...

segmentum laterale
Synonym for lateral segment ... A delimited part or section of an organ or other structure which lies farthest to the left or right side of the other similar parts or sections. 1) segmentum laterale (hepar); the lateral segment of the left lobe of the liver. 2) segmentum laterale (pulmo dexter); [S 4]; the lateral segment of the middle lobe of the r …

segmentum lingulare inferius
Synonym for inferior lingular segment ... Inferior lingular segment of superior lobe of left lung; between superior lingular segment and oblique fissure. ... Synonym: segmentum lingulare inferius. ... (05 Mar 2000) ...

segmentum lingulare superius
Synonym for superior lingular segment ... Superior lingular segment of the superior lobe of the left lung; lies above inferior lingular segment. ... Synonym: segmentum lingulare superius. ... (05 Mar 2000) ...

segmentum mediale
Synonym for medial segment ... A delimited part or section of an organ or other structure which lies closer or closest to the midline than the other similar parts or sections. 1) segmentum mediale (hepar); the medial segment of the left lobe of the liver. 2) segmentum mediale (pulmo dexter); [S 5]; the medial segment of the middle lobe of the right …

segmentum posterius
Synonym for posterior segment ... A delimited part or section of an organ or other structure which lies in back of or dorsal to the other similar parts or sections; 1) segmentum posterius (hepar); the posterior segment of the right lobe of the liver; 2) segmentum posterius (pulmo dexter); [S 2]; the posterior segment of the superior lobe of the righ …

segmentum subapicale
Synonym for subapical segment ... An inconstant segment of the inferior lobe of the right and left lungs. ... Synonym: segmentum subapicale, segmentum subsuperius, subsuperior segment. ... (05 Mar 2000) ...

segmentum subsuperius
Synonym for subapical segment ... An inconstant segment of the inferior lobe of the right and left lungs. ... Synonym: segmentum subapicale, segmentum subsuperius, subsuperior segment. ... (05 Mar 2000) ...

segmentum superius
Synonym for apical segment ... Apical segment of the superior lobe of the right lung, apical segment of the inferior lobe of the right and left lungs. ... Synonym: segmentum superius. ... Synonym: segmentum superius, segmentum apicale, superior segment. ... (05 Mar 2000) ...

segond fracture
<radiology> Vertical avulsion fracture of the proximal lateral tibia associated with ligamentous injury: lateral collateral ligament, ACL ... (12 Dec 1998) ...

segregate
1. Separate; select. ... 2. <botany> Separated from others of the same kind. ... Origin: L. Segregatus, p. P. Of segregare to separate; pref. Se- aside + grex, gregis, a flock or herd. See Gregarious. ... <geology> To separate from a mass, and collect together about centers or along lines of fracture, as in the process of crystallization o …

segregation analysis
In genetics, the enumeration of progeny according to distinct and mutually exclusive phenotypes; used as a test of a putative pattern of inheritance, e.g., mendelian, dominant autosomal, epistatic, age-dependent. ... (05 Mar 2000) ...

segregation of chromosomes
<cell biology, genetics> The separation of pairs of homologous chromosomes that occurs at meiosis so that only one chromosome from each pair is present in any single gamete. ... (18 Nov 1997) ...

segregation ratio
In genetics, the proportion of progeny of a particular genotype or phenotype from actual matings of specified genotypes. The test of a Mendelian hypothesis is the comparison of the segregation rate with the Mendelian rate. ... (05 Mar 2000) ...

seguestration
1. The seizure of the property of an individual for the use of the state; particularly applied to the seizure, by a belligerent power, of debts due from its subjects to the enemy. ... 2. The state of being separated or set aside; separation; retirement; seclusion from society. 'Since Henry Monmouth first began to reign, . . . This loathsome sequestr …

Seidel
Erich, German ophthalmologist, 1882-1946. ... See: Seidel's scotoma, Seidel's sign. ... (05 Mar 2000) ...

Seidel's scotoma
A form of Bjerrum's scotoma. ... See: Seidel's sign. ... (05 Mar 2000) ...

Seidel's sign
<clinical sign> A sickle-shaped scotoma appearing as an upward or downward extension of the blind spot. ... (05 Mar 2000) ...

seidlitz
Of or pertaining to Seidlitz, a village in Bohemia. ... Alternative forms: Sedlitz] Seidlitz powders, effervescing salts, consisting of two separate powders, one of which contains forty grains of sodium bicarbonate mixed with two drachms of Rochell salt (tartrate of potassium and sodium) and the other contains thirty-five grains of tartaric acid. Th …

Seidlitz mixture
A mixture of 3 parts Rochelle salt and 1 part sodium bicarbonate. Ten grams of the mixture are employed with 2.17 g tartaric acid for one Seidlitz powder. The powder, which effervesces when placed in water, was widely used as a cathartic. ... (05 Mar 2000) ...

Seignette, Pierre
<person> French apothecary, 1660-1719. ... See: Seignette's salt. ... (05 Mar 2000) ...

Seignette's salt
Synonym for potassium sodium tartrate ... KNaC4H4O6;a mild saline cathartic, used as an ingredient in compound effervescent powders. ... Synonym: Rochelle salt, Seignette's salt, sodium potassium tartrate. ... (05 Mar 2000) ...

Seiler, Carl
<person> Swiss laryngologist and anatomist in U.S., 1849-1905. ... See: Seiler's cartilage. ... (05 Mar 2000) ...

Seiler's cartilage
A small rod of cartilage attached to the vocal process of the arytenoid cartilage. ... (05 Mar 2000) ...

seine
A large net, one edge of which is provided with sinkers, and the other with floats. It hangs vertically in the water, and when its ends are brought together or drawn ashore incloses the fish. Seine boat, a boat specially constructed to carry and pay out a seine. ... Origin: F. Seine, or AS. Segene, bth fr. L. Sagena, Gr. ... Source: Websters Dictiona …

Seip
Martin, 20th century Scandinavian physician. ... See: Lawrence-Seip syndrome. ... (05 Mar 2000) ...

seir model
<epidemiology> A class of compartmental prevalence models, with compartments Susceptible, Latent (Exposed), Infectious and Recovered. Takes its name from a common notation. In the notation used in the course, this would be an XHYZ model. Many permutations possible. ... (05 Dec 1998) ...

seismocardiogram
Recording of cardiac vibrations as they affect the entire body, by various techniques. ... Origin: G. Seismos, a shaking, + cardiogram ... (05 Mar 2000) ...

seismotherapy
Synonym: vibratory massage. ... Origin: G. Seismos, a shaking, vibration ... (05 Mar 2000) ...

seizure
<clinical sign, neurology> A sudden attack or convulsion due to involuntary electrical activity in the brain. It is due to an uncontrolled burst of electrical activity in the brain that can result in a wide variety of clinical manifestations such as: muscle twitches, staring, tongue biting, urination, loss of consciousness and total body shak …

seizure, causes of
Known causes of seizures include head injuries, brain tumours, lead poisoning, maldevelopment of the brain, genetic and infectious illnesses. But in fully half of the patients with seizures, no cause can be found. ... (12 Dec 1998) ...

seizures
Attacks of cerebral origin consisting of sudden and transitory abnormal phenomena of a motor, sensory, autonomic or psychic nature resulting from transient dysfunction of the brain. ... (12 Dec 1998) ...

sejunction
Rarely used term for a separation; a breaking of continuity in the mental processes. ... Origin: L. Se-jungo, pp. -junctus, to disjoin ... (05 Mar 2000) ...

selaphobia
<psychology> Rarely used term for a morbid fear of a flash of light. ... Origin: G. Selas, light, + phobos, fear ... (05 Mar 2000) ...

Seldinger technique
A method of percutaneous insertion of a catheter into a blood vessel or space, such as an abscess cavity: a needle is used to puncture the structure and a guide wire is threaded through the needle; when the needle is withdrawn, a catheter is threaded over the wire; the wire is then withdrawn, leaving the catheter in place. ... (05 Mar 2000) ...

Seldinger, Sven Ivar
<person> Swedish radiologist, *1921. ... See: Seldinger technique. ... (05 Mar 2000) ...

selectable marker
<molecular biology> A gene whose expression allows one to identify cells that have been transforrned or transfected with a vector containing the marker gene. ... (09 Oct 1997) ...

selectin
<protein> Group of cell adhesion molecules that bid to carbohydrates via a lectin like domain. The name is derived from select and lectin. ... They are integral membrane glycoproteins with an N terminal, C type lectin domain, followed by an EGF like domain, a variable number of repeats of the short consensus sequence of complement regulatory p …

selectins
Family of cell adhesion molecules consisting of a lectin-like domain, an epidermal growth factor-like domain, and a variable number of domains that encode proteins homologous to complement-binding proteins. Selectins mediate the binding of leukocytes to the vascular endothelium. ... (12 Dec 1998) ...

selection
<biology> Placing organisms under conditions where the growth of those with a particular genotype will be favored. ... (09 Oct 1997) ...

selection (genetics)
Differential and non-random reproduction of different genotypes, operating to alter the gene frequencies within a population. ... (12 Dec 1998) ...

selection bias
The introduction of error due to systematic differences in the characteristics between those selected and those not selected for a given study. In sampling bias, error is the result of failure to ensure that all members of the reference population have a known chance of selection in the sample. ... (12 Dec 1998) ...

selection coefficient
The proportion of progeny or potential progeny not surviving to sexual maturity; usually defined artificially by expressing the fitness of a phenotype as a fraction of the mean or optimal fitness to give the relative fitness, and subtracting this fraction from unity. If the mean size of family in the population is 3.2 and that for a particular geno …

selection cutting
The periodic removal at short intervals of the oldest and largest trees in the stand, individually or in small groups. ... (05 Dec 1998) ...

selection pressure
Impact of effective reproduction due to environmental impact on the phenotype. ... (05 Mar 2000) ...

selective angiography
<procedure, radiology> Angiography in which visualization is improved by concentrating the contrast medium in the region to be studied by injection through a catheter positioned in a regional artery. ... (05 Mar 2000) ...

selective grinding
<dentistry> The modification of the occlusal forms of teeth by grinding according to a plan or by grinding at selected places marked by articulating ribbon or paper. ... (05 Mar 2000) ...

selective hypoaldosteronism
<endocrinology> Isolated hypoaldosteronism, aldosterone deficiency without a concomitant deficiency of glucocorticoid hormones. ... (05 Mar 2000) ...

selective inhibition
Synonym for competitive inhibition ... <chemistry> Inhibitor that occupies the active site of an enzyme or the binding site of a receptor and prevents the normal substrate or ligand from binding. ... at sufficiently high concentration of the normal ligand inhibition is lost: the Km is altered by the competitive inhibitor, but the Vmax remains t …

selective injection
Injection of contrast medium following selective catheterization of a branch artery or vein for angiography. ... (05 Mar 2000) ...

selective medium
<cell culture> A medium which allows the growth of certain types of microorganisms in preference to others. ... For example: an antibiotic-containing medium allows the growth of only those microorganisms which are resistant to this antibiotic. ... (09 Oct 1997) ...

selective memory
<psychology> Reception or retrieval of only some of the events in an experience. ... (05 Mar 2000) ...

selective reduction
<obstetrics> A technique for intrauterine termination of one or more foetuses while leaving one or more foetuses undisturbed, usually in pregnancies with foetal anomalies or with multiple gestations. ... (05 Mar 2000) ...

selective stain
<technique> A stain that colours one portion of a tissue or cell exclusively or more deeply than the remaining portions. ... (05 Mar 2000) ...

selectivity
<pharmacology> The degree to which a dose of a drug produces the desired effect in relation to adverse effects. ... (18 Nov 1997) ...

selector gene
<molecular biology> A group of genes that determines which part of a developmental pattern cells will be allocated within a developmental segment. ... (18 Nov 1997) ...

selegiline
<chemical> A selective, irreversible inhibitor of type b monoamine oxidase. It is used in newly diagnosed patients with parkinson's disease. It may slow progression of the clinical disease and delay the requirement for levodopa therapy. It also may be given with levodopa upon onset of disability. The compound without isomeric designation is d …

selenate reductase
<enzyme> Terminal electron acceptor for anaerobic respiration in thauera selenatis; reduces selenate to selenite ... Registry number: EC 1.97.- ... (26 Jun 1999) ...

selene unguium
Synonym: lunula. ... Origin: G. Selene, moon; gen. Pl. Of L. Unguis, nail ... (05 Mar 2000) ...

selenio-
<chemistry, prefix> A combining form (also used adjectively) denoting the presence of selenium or its compounds; as, selenio-phosphate, a phosphate having selenium in place of all, or a part, of the oxygen. ... (29 Oct 1998) ...

selenium
<element> Essential trace element that must be provided as a supplement in serum free culture media for most animal cells. ... (18 Nov 1997) ...

selenium compounds
Inorganic compounds that contain selenium as an integral part of the molecule. ... (12 Dec 1998) ...

selenium deficiency
deficiency of the essential mineral selenium causes keshan disease, a fatal form of cardiomyopathy (disease of the heart muscle) first observed in keshan province in china and since found elsewhere. According to the national academy of sciences, the recommended dietary allowances of selenium are 70 milligrams per day for men and 55 milligrams per d …

selenium excess
Too much of the mineral selenium may cause reversible changes in the hair (balding) and nails, garlic odour to the breath, intestinal distress, weakness and slower mentation (slowed mental functionning). According to the national academy of sciences, the recommended dietary allowances of selenium are 70 milligrams per day for men and 55 milligrams …

selenium poisoning
Chronic poisoning of horses, cattle, and swine, caused by ingestion of grains and forage raised on soils high in selenium; it occurs only in arid regions, from eating certain plants which are selenium accumulators. ... (05 Mar 2000) ...

selenium radioisotopes
Unstable isotopes of selenium that decay or disintegrate emitting radiation. Se atoms with atomic weights 70-73, 75, 79, 81, and 83-85 are radioactive selenium isotopes. ... (12 Dec 1998) ...

selenium sulfide
A mixture of crystalline selenium monosulfide and solid solutions of selenium and sulfur in an amorphous form, containing 52 to 55.5% Se; used in the treatment of seborrhoea of the scalp or dandruff; it is applied to the scalp as a suspension. ... (05 Mar 2000) ...

selenium transferase
<enzyme> Converts phosphoseryl-tRNA to selenocysteinyl-tRNA; product of sela gene; converts seryl-tRNA(sec)(uca) to selenocysteyl-tRNA(sec)(uca) in pyridoxal-phosphate dependent reaction ... Registry number: EC 2.- ... Synonym: se-transferase, selenocysteine synthase ... (26 Jun 1999) ...

selenocysteine
<amino acid> An unusual amino acid of proteins, the selenium analogue of cysteine, in which a selenium atom replaces sulphur. Involved in the catalytic mechanism of seleno enzymes such as formate dehydrogenase of E. Coli and mammalian glutathione peroxidase. May be co translationally coded by a special opal suppressor tRNAase that recognises …

selenocysteine lyase
<enzyme> Decomposes l-selenocysteine into l-alanine and h2se ... Registry number: EC 4.99.- ... Synonym: selenocysteine beta-lyase ... (26 Jun 1999) ...

selenocysteine methyltransferase
<enzyme> Transfers methyl group from s-adenosylmethionine to the selenium atom of selenocysteine to form se-methyl-selenocysteine; plays a crucial role in conferring selenium tolerance; from astragalus bisculatus ... Registry number: EC 2.1.1.- ... Synonym: se-cys methyltransferase ... (26 Jun 1999) ...

selenodont
Denoting an animal, or man, having teeth, as the human molars, with longitudinal crescent-shaped ridges. ... Origin: G. Selene, moon, + odous (odont-), tooth ... (05 Mar 2000) ...

selenomethionine
<chemical> 2-amino-4-(methylseleno)butanoic acid. Diagnostic aid in pancreas function determination. ... Chemical name: Butanoic acid, 2-amino-4-(methylseleno)- ... (12 Dec 1998) ...

Selenomonas
A genus of bacteria of uncertain taxonomic affiliation, containing curved to crescentic or helical, Gram-negative, strictly anaerobic rods that are motile with an active tumbling motion. Several flagella are present in a tuft, often near the centre of the concave side. The type species, Selenomonas sputigena, is found in the human buccal cavity. …