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


spino-olivary tract
Multiple spinal tracts terminating in the accessory olivary nuclei. ... See: olivospinal tract. ... (05 Mar 2000) ...

spinobulbar
Synonym for bulbospinal ... Relating to the medulla oblongata and spinal cord, particularly to nerve fibres interconnecting the two. ... Synonym: spinobulbar. ... (05 Mar 2000) ...

spinocerebellar ataxia
The most common hereditary ataxia, with onset in middle to late childhood, manifested as limb ataxia, nystagmus, kyphoscoliosis, and pes cavus; the major pathological changes are found in the posterior columns of the spinal cord; most often autosomal recessive inheritance. ... (05 Mar 2000) ...

spinocerebellar degeneration
An autosomal recessive inherited disorder that leads to the progressive dysfunction of the cerebellum, spinal cord and peripheral nerves. ... Symptoms usually begin in childhood before puberty and consist of an unsteady gait (ataxia), slurred speech (dysarthria) and jerky eye movements (nystagmus). Other findings include kyphoscoliosis, hammer toe, …

spinocerebellar tracts
See: anterior spinocerebellar tract, posterior spinocerebellar tract. ... (05 Mar 2000) ...

spinocerebellum
Synonym for paleocerebellum ... Phylogenetic term referring to the portion of the cerebellum including most of the vermis and the adjacent zones of the cerebellar hemispheres rostral to the primary fissure; paleocerebellum is equated with the anterior lobe and corresponds to the zone of distribution of the spinocerebellar tracts and is sometimes cal …

spinocervicothalamic tract
A tract composed of axons that originate from laminae III-V, ascend ipsilaterally to the lateral cervical nucleus (LCN) where they synapse, LCN neurons project to the contralateral thalamus via the medial lemniscus. ... (05 Mar 2000) ...

spinocollicular
Synonym for spinotectal ... Passing upward from the spinal cord to the tectum. ... Synonym: spinocollicular. ... (05 Mar 2000) ...

spinocostalis
The superior and inferior serratus posterior muscles regarded as one. ... Origin: L. ... (05 Mar 2000) ...

spinogalvanization
Application of the constant electrical current to the spinal cord. ... (05 Mar 2000) ...

spinoglenoid
Relating to the spine and the glenoid cavity of the scapula. ... (05 Mar 2000) ...

spinoglenoid ligament
Synonym for inferior transverse scapular ligament ... <anatomy> An inconstant fibrous band that passes from the lateral border of the spine of the scapula to the posterior margin of the glenoid cavity. ... Synonym: ligamentum transversum scapulae inferius, spinoglenoid ligament. ... (05 Mar 2000) ...

spinomuscular
Relating to the spinal cord and the muscles supplied by the spinal nerves. ... (05 Mar 2000) ...

spinoneural
Relating to the spinal cord and the nerves given off from it. ... (05 Mar 2000) ...

spinoreticular fibres
Nerve fibres originating from the spinal cord and terminating in the reticular formation of the brainstem. ... Synonym: spinoreticular tract. ... (05 Mar 2000) ...

spinoreticular tract
Synonym for spinoreticular fibres ... Nerve fibres originating from the spinal cord and terminating in the reticular formation of the brainstem. ... Synonym: spinoreticular tract. ... (05 Mar 2000) ...

spinose
Bearing spines. ... (09 Oct 1997) ...

spinotectal
Passing upward from the spinal cord to the tectum. ... Synonym: spinocollicular. ... (05 Mar 2000) ...

spinotectal tract
The relatively small component of the spinothalamic tractus that terminates in the intermediate and deep layers of the superior colliculus and in parts of the periaqueductal gray. ... Synonym: tractus spinotectalis. ... (05 Mar 2000) ...

spinothalamic cordotomy
Synonym for anterolateral cordotomy ... <procedure> Division of the anterolateral quadrant of the spinal cord to section the spinothalamic tract. ... Synonym: anterolateral tractotomy, spinal tractotomy, spinothalamic cordotomy. ... (05 Mar 2000) ...

spinothalamic tract
A large ascending fibre bundle in the ventral half of the lateral funiculus of the spinal cord, arising from cells in the posterior horn at all levels of the cord, which cross within their segments of origin in the white commissure. In their contralateral ascent, the bundle is intermingled with numerous intersegmental fibres. The spinothalamic trac …

spinothalamic tractotomy
<procedure> May be spinal (cordotomy), medullary (Schwartz tractotomy), or mesencephalic (Walker tractotomy). ... (05 Mar 2000) ...

spinotransversarius
The splenius and obliquus capitis major muscles regarded as one. ... (05 Mar 2000) ...

spinous layer
Synonym for stratum spinosum epidermidis ... The layer of polyhedral cells in the epidermis; shrinkage artifacts and adhesion of these cells at their desmosomal junctions gives a spiny or prickly appearance. ... Synonym: prickle cell layer, spinous layer. ... (05 Mar 2000) ...

spinous process
The dorsal projection from the centre of a vertebral arch. ... Synonym: sphenoidal spine. ... (05 Mar 2000) ...

spinous process of tibia
Synonym for intercondylar eminence ... Intercondyloid eminence, an elevation on the proximal extremity of the tibia between the two articular surfaces. ... Synonym: eminentia intercondylaris, eminentia intercondyloidea, spinous process of tibia. ... (05 Mar 2000) ...

spinster
1. A woman who spins, or whose occupation is to spin. 'She spake to spinster to spin it out.' (Piers Plowman) 'The spinsters and the knitters in the sun.' (Shak) ... 2. A man who spins. ... 3. An unmarried or single woman; used in legal proceedings as a title, or addition to the surname. 'If a gentlewoman be termed a spinster, she may abate the writ. …

spintharicon
A spark chamber device used to record the distribution of low energy emissions from radiopharmaceuticals administered internally, especially for thyroid scans using iodine-125. ... Origin: G. Spinther, spark ... (05 Mar 2000) ...

spinthariscope
Synonym: scintillation counter. ... Origin: G. Spinther, spark, + skopeo, to view ... (05 Mar 2000) ...

spiny
1. Full of spines; thorny; as, a spiny tree. ... 2. Like a spine in shape; slender. 'Spiny grasshoppers sit chirping.' ... 3. Abounding with difficulties or annoyances. 'The spiny deserts of scholastic philosophy.' (Bp. Warburton) Spiny lobster. ... <zoology> Same as Rock lobster, under Rock. See also Lobster. ... Origin: From Spine. ... Source: W …

spiperone
<chemical> A spiro butyrophenone analog similar to haloperidol and other related compounds. It has been recommended in the treatment of schizophrenia. ... Pharmacological action: antipsychotic agents, butyrophenone, dopamine antagonists. ... Chemical name: 1,3,8-Triazaspiro(4.5)decan-4-one, 8-(4-(4-fluorophenyl)-4-oxobutyl)-1-phenyl- ... (12 Dec …

spir-
See: spiro-. ... (05 Mar 2000) ...

spiracle
1. <anatomy> The nostril, or one of the nostrils, of whales, porpoises, and allied animals. ... 2. <zoology> One of the external openings communicating with the air tubes or tracheae of insects, myriapods, and arachnids. They are variable in number, and are usually situated on the sides of the thorax and abdomen, a pair to a segment. The …

spiradenitis
Synonym: hidradenitis. ... Origin: L. Spiro, to breathe or perspire, + G. Aden, gland, + -itis, inflammation ... (05 Mar 2000) ...

spiradenoma
<tumour> A benign tumour of sweat glands. ... Origin: G. Speira, coil, + adenoma ... (05 Mar 2000) ...

spiral
Of leaves or floral organs, borne at different levels on the main stem, in an ascending spiral. ... Compare: cyclic. ... (09 Oct 1997) ...

spiral and curved bacteria
A large, very diverse group of bacteria in which some species are curved, some helical. ... (12 Dec 1998) ...

spiral artery
<anatomy, artery> One of the corkscrew-like artery's in premenstrual or progestational endometrium. ... Synonym: coiled artery of the uterus. ... (05 Mar 2000) ...

spiral bandage
An oblique bandage encircling a limb, the successive turns overlapping those preceding. ... (05 Mar 2000) ...

spiral bulbar septum
See: spiral septum. ... (05 Mar 2000) ...

spiral canal of cochlea
Synonym for cochlear canal ... The winding tube of the bony labyrinth which makes two and a half turns about the modiolus of the cochlea; it is divided incompletely into two compartments by a winding shelf of bone, the bony spiral lamina. ... Synonym: canalis spiralis cochleae, Rosenthal's canal, spiral canal of cochlea. ... (05 Mar 2000) ...

spiral canal of modiolus
<anatomy> The space in the modiolus in which the spiral ganglion of the cochlear nerve lies. ... Synonym: canalis spiralis modioli. ... (05 Mar 2000) ...

spiral cleavage
<marine biology> Pattern of early cleavage found in molluscs and annelids (both mosaic eggs). ... The animal pole blastomeres are rotated with respect to those of the vegetal pole. The handedness of the spiral twist is maternally inherited. ... (18 Nov 1997) ...

spiral cochlear ganglion
Synonym for spiral ganglion of cochlea ... An elongated ganglion of bipolar sensory nerve cell bodies on the cochlear part of the vestibulocochlear nerve in the spiral canal of the modiolus; each ganglion cell gives rise to a peripheral process that passes between the layers of the bony spiral lamina to the organ of Corti, and a central axon that en …

spiral computed tomography
<radiology> Computed tomography in which the X-ray tube continuously revolves around the patient, who is simultaneously moved longitudinally; computer interpolation allows reconstruction of standard transverse scans or images in any preferred plane. ... Synonym: helical computed tomography, helical CT, spiral CT. ... (20 Jun 2000) ...

spiral crest
Synonym for spiral ligament of cochlea ... The thickened periosteal lining of the bony cochlea forming the outer wall of the cochlear duct to which the basal lamina attaches. ... Synonym: crista spiralis, ligamentum spirale cochleae, spiral crest. ... (05 Mar 2000) ...

spiral CT
Synonym for spiral computed tomography ... <radiology> Computed tomography in which the X-ray tube continuously revolves around the patient, who is simultaneously moved longitudinally; computer interpolation allows reconstruction of standard transverse scans or images in any preferred plane. ... Synonym: helical computed tomography, helical CT, …

spiral fold of cystic duct
A series of crescentic folds of mucous membrane in the upper part of the cystic duct, arranged in a somewhat spiral manner. ... Synonym: plica spiralis ductus cystici, Amussat's valve, Heister's valve, spiral valve of cystic duct, valvula spiralis. ... (05 Mar 2000) ...

spiral foraminous tract
Openings in the cochlear area of the bottom of the internal acoustic meatus through which the fibres of the cochlear nerve leave the bony labyrinth to enter the cranial cavity. ... Synonym: tractus spiralis foraminosus. ... (05 Mar 2000) ...

spiral fracture
A fracture the line of which is helical in the bone. ... (05 Mar 2000) ...

spiral ganglion
The sensory ganglion of the cochlear nerve. The cells of the spiral ganglion send fibres peripherally to the cochlear hair cells and centrally to the cochlear nuclei of the brainstem. ... (12 Dec 1998) ...

spiral ganglion of cochlea
An elongated ganglion of bipolar sensory nerve cell bodies on the cochlear part of the vestibulocochlear nerve in the spiral canal of the modiolus; each ganglion cell gives rise to a peripheral process that passes between the layers of the bony spiral lamina to the organ of Corti, and a central axon that enters the hindbrain as a component of the i …

spiral groove
Synonym for groove for radial nerve ... <anatomy, nerve> The shallow groove that passes around the shaft of the humerus; it lodges the radial nerve and deep brachial artery. ... Synonym: sulcus nervi radialis, musculospiral groove, spiral groove. ... (05 Mar 2000) ...

spiral hyphae
Hyphae that end in a flat or helical coil, as in laboratory colonies of Trichophyton mentagrophytes. ... (05 Mar 2000) ...

spiral joint
Synonym for cochlear joint ... A variety of hinge joint in which the elevation and depression, respectively, on the opposing articular surfaces form part of a spiral, flexion being then accompanied by a certain amount of lateral deviation. ... Synonym: screw joint, spiral joint. ... (05 Mar 2000) ...

spiral lamina
The bony plate which extends outwards from the modiolus. It is part of the structure which divides trhe cochlea into sections. ... (12 Dec 1998) ...

spiral ligament of cochlea
The thickened periosteal lining of the bony cochlea forming the outer wall of the cochlear duct to which the basal lamina attaches. ... Synonym: crista spiralis, ligamentum spirale cochleae, spiral crest. ... (05 Mar 2000) ...

spiral line
Synonym for intertrochanteric line ... A rough line that separates the neck and shaft of the femur anteriorly; it passes downward and medially from the greater trochanter to the lesser trochanter and continues into the medial lip of the linea aspera. ... Synonym: linea intertrochanterica, linea spiralis, spiral line. ... (05 Mar 2000) ...

spiral membrane
Synonym for tympanic wall of cochlear duct ... The wall that separates the cochlear duct from the scala tympani; it consists of the osseous spiral lamina and the basilar membrane. ... Synonym: paries tympanicus ductus cochlearis, membrana spiralis, spiral membrane. ... (05 Mar 2000) ...

spiral organ
A prominent ridge of highly specialised epithelium in the floor of the cochlear duct overlying the basilar membrane of cochlea, containing one inner row and three outer rows of hair cells, or cells of Corti (the auditory receptor cells innervated by the cochlear nerve) supported by various columnar cells: the pillars of Corti, cells of Hensen, and …

spiral plate
Synonym for osseous spiral lamina ... A double plate of bone winding spirally around the modiolus dividing the spiral canal of the cochlea incompletely into two, scala tympani and scala vestibuli; between the two plates of this lamina the fibres of the cochlear nerve reach the spiral organ (of Corti). ... Synonym: lamina spiralis ossea, spiral plate. …

spiral prominence
A projecting portion of the spiral ligament of the cochlea, bounding the lower edge of the stria vascularis and containing within it a blood vessel, the vas prominens. ... Synonym: prominentia spiralis. ... (05 Mar 2000) ...

spiral septum
A septum dividing the embryonic bulbus cordis into pulmonary and aortic outflow tracts from the developing heart; the distal spiral septum is derived from the right and left endocardial cushions and so separates the pulmonary and aortic orifices; the proximal spiral septum is the portion of the septum that is incorporated into the membranous part o …

spiral suture
Synonym for continuous suture ... An uninterrupted series of stitches using one suture; the stitching is fastened at each end by a knot. ... Synonym: spiral suture, uninterrupted suture. ... (05 Mar 2000) ...

spiral tip catheter
A catheter with a helical filiform tip. ... (05 Mar 2000) ...

spiral tubule
The segment of urinary tubule coming next after the proximal convoluted tubule. ... (05 Mar 2000) ...

spiral valve of cystic duct
Synonym for spiral fold of cystic duct ... A series of crescentic folds of mucous membrane in the upper part of the cystic duct, arranged in a somewhat spiral manner. ... Synonym: plica spiralis ductus cystici, Amussat's valve, Heister's valve, spiral valve of cystic duct, valvula spiralis. ... (05 Mar 2000) ...

spiral vein of modiolus
The vein running a spiral course in the modiolus of the cochlea; it is tributary to both the labyrinthine vein and the vein of the cochlear canaliculus. ... Synonym: vena spiralis modioli. ... (05 Mar 2000) ...

spiralling
Recycling of organic matter and nutrients between streambed and water column along a stream course. ... (09 Oct 1997) ...

spiramycin
<chemical> A macrolide antibiotic produced by streptomyces ambofaciens. The drug is effective against gram-positive aerobic pathogens, n. Gonorrhoeae, and staphylococci. It is used to treat infections caused by bacteria and toxoplasma gondii. ... Pharmacological action: antibiotics, macrolide, coccidiostats. ... Chemical name: Spiramycin ... (12 …

spiramycin I 3-hydroxyl acylase
<enzyme> Streptomyces ambofaciens enzyme prep able to acylate hydroxyl group at c-3 of lactone; no preference between acetyl-CoA and propionyl-CoA ... Registry number: EC 2.3.1.- ... Synonym: propionyl acylase ... (26 Jun 1999) ...

spirant
A term used differently by different authorities; by some as equivalent to fricative, that is, as including all the continuous consonants, except the nasals m, n, ng; with the further exception, by others, of the liquids r, l, and the semivowels w, y; by others limited to f, v, th surd and sonant, and the sound of German ch, thus excluding the sibi …

spire
To breathe. ... Origin: L. Spirare to breathe. See Spirit. ... 1. A slender stalk or blade in vegetation; as, a spire grass or of wheat. 'An oak cometh up a little spire.' (Chaucer) ... 2. A tapering body that shoots up or out to a point in a conical or pyramidal form. Specifically, the roof of a tower when of a pyramidal form and high in proportion t …

spirem
Spireme ... Term formerly applied to the first stage of mitosis (prophase) when extended chromosome filaments have the appearance of a loose ball of yarn, on the incorrect supposition that the filaments were continuous and later broke apart to form individual chromosomes. ... Origin: G. Speirema, a coil 1 ... (05 Mar 2000) ...

spirilla
Plural of spirillum. ... (05 Mar 2000) ...

Spirillaceae
A family of usually motile, aerobic to facultatively anaerobic bacteria (order Pseudomonadales) containing Gram-negative, rod-shaped cells which are curved or spirally twisted. Motile cells contain a single polar flagellum or a tuft of polar flagella. These organisms are primarily water forms, although some are parasitic or pathogenic on humans and …

spirillar
S-shaped; referring to a bacterial cell with an S shape. ... (05 Mar 2000) ...

spirillar dysentery
A form of dysentery or diarrhoea, described as occurring in the south of France, believed to be caused by a spirillum present in great numbers in the intestinal epithelia. ... (05 Mar 2000) ...

spirillicidal
Destructive to spirilla or spirochetes. ... Origin: spirilla + L. Caedo, to kill ... (05 Mar 2000) ...

spirillosis
Any disease caused by the presence of spirilla in the blood or tissues. ... (05 Mar 2000) ...

spirillum
A fairly rigid helically twisted bacterial cell often, but not necessarily, a member of the genus Spirillum. ... (18 Nov 1997) ...

spirillum fever
Synonym for relapsing fever ... An acute infection characterised by recurrent episodes of pyrexia alternating with asymptomatic intervals of apparent recovery. This condition has worldwide distribution and is caused by spirochetes of the genus borrelia. ... (12 Dec 1998) ...

spirit
1. Air set in motion by breathing; breath; hence, sometimes, life itself. 'All of spirit would deprive.' 'The mild air, with season moderate, Gently attempered, and disposed eo well, That still it breathed foorth sweet spirit.' (Spenser) ... 2. A rough breathing; an aspirate, as the letter h; also, a mark to denote aspiration; a breathing. 'Be it a …

spirit lamp
A lamp, used mainly for heating in laboratory work, in which alcohol is burned. ... (05 Mar 2000) ...

spirit thermometer
A thermometer filled with alcohol, used to measure extreme degrees of cold. ... (05 Mar 2000) ...

spiritualism
1. The quality or state of being spiritual. ... 2. <physiology> The doctrine, in opposition to the materialists, that all which exists is spirit, or soul that what is called the external world is either a succession of notions impressed on the mind by the Deity, as maintained by Berkeley, or else the mere educt of the mind itself, as taught by …

spiritualist
1. One who professes a regard for spiritual things only; one whose employment is of a spiritual character; an ecclesiastic. ... 2. One who maintains the doctrine of spiritualism. ... 3. One who believes in direct intercourse with departed spirits, through the agency of persons commonly called mediums, by means of physical phenomena; one who attempts …

spirituality
Origin: L. Spiritualitas: cf. F. Spiritualite. ... 1. The quality or state of being spiritual; incorporeality; heavenly-mindedness. 'A pleasure made for the soul, suitable to its spirituality.' (South) 'If this light be not spiritual, yet it approacheth nearest to spirituality.' (Sir W. Raleigh) 'Much of our spirituality and comfort in public worshi …

spiritualize
1. To refine intellectiually or morally; to purify from the corrupting influence of the world; to give a spiritual character or tendency to; as, to spiritualize soul. 'This seen in the clear air, and the whole spiritualized by endless recollections, fills the eye and the heart more forcibly than I can find words to say.' (Carlyle) ... 2. To give a s …

spirituous
Containing alcohol in large amount, denoting liquors. ... (05 Mar 2000) ...

spirituous liquor
A strong alcoholic liquor obtained by distillation, such as whiskey. ... (05 Mar 2000) ...

spiritus
Synonym: spirit. ... Origin: L. ... (05 Mar 2000) ...

spiro compounds
A group of compounds consisting in part of two rings sharing one carbon atom in common. ... (12 Dec 1998) ...

spiro-
1. Coil, coil-shaped. ... Origin: G. Speira ... 2. Breathing. ... Origin: L. Spiro, to breathe ... (05 Mar 2000) ...

spiro-index
Vital capacity divided by the height of the individual. ... (05 Mar 2000) ...

Spirocerca lupi
The oesophageal worm of dogs and other carnivores, a red spiruroid nematode that occurs in nodules in the wall of the oesophagus, stomach, and aorta of dogs, foxes, and wolves; intermediate hosts are various coprophagic beetles. Clinical symptoms occur only in very heavy infections, which are associated with oesophageal carcinomata in dogs and with …

spirochaeta
A genus of flexible, spiral rods found in hydrogen sulfide-containing mud, sewage, and polluted water. None of the species properly referred to in this genus are pathogenic. ... (12 Dec 1998) ...

Spirochaeta obermeieri
Synonym for Borrelia recurrentis ... A species causing relapsing fever in South America, Europe, Africa, and Asia; transmitted by the bedbug, Cimex lectularius, and the louse, Pediculus humanus subsp. Humanus. ... Synonym: Obermeier's spirillum, Spirochaeta obermeieri. ... (05 Mar 2000) ...

Spirochaeta plicatilis
A very large species (sometimes as long as 200 um) of bacteria; it is nonparasitic, so far as known; it is the type species of the genus Spirochaeta. ... (05 Mar 2000) ...

spirochaetaceae
A family of spiral bacteria of the order spirochaetales. ... (12 Dec 1998) ...