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

PTE
<abbreviation> Pulmonary thromboembolism or pulmonary thromboendarterectomy. ... (05 Mar 2000) ...

PTEA
<abbreviation> Pulmonary thromboendarterectomy. ... (05 Mar 2000) ...

pter-
Ptero- ... Combining form meaning wing; feather. ... Origin: G. Pteron, wing, feather ... (05 Mar 2000) ...

pteridine
Azinepurine; benzotetrazine; pyrazino[2,3-d]pyrimidine;a two-ring heterocyclic compound found as a component of pteroic acid and the pteroylglutamic acids (folic acids, pteropterin, etc.); simple pteridine derivatives (e.g., xanthopterin, leucopterin) occur as pigments in butterfly wings, whence the name. ... (05 Mar 2000) ...

Pteridophyta
<botany> Division of the plant kingdom that includes ferns, horsetails and clubmosses. ... (18 Nov 1997) ...

pteridophyte
<botany> Ferns. A major division of the plant kingdom, having clear alternation of generations with a dominant vascular sporophyte initially dependent upon the gametophyte which is very reduced. ... (12 Jan 1998) ...

pterin
Term loosely used for any of the compounds containing pteridine; specifically, 2-amino-4-hydroxypteridine. Some pteridines (e.g., xanthopterin, leucopterin) still retain the pterin root. ... (05 Mar 2000) ...

pterin deaminase
An aminohydrolase catalyzing hydrolytic deamination of 2-amino-4-hydroxypteridine to form 2,4-dihydroxypteridine and ammonia. ... (05 Mar 2000) ...

pterin-4a-carbinolamine dehydratase
<enzyme> Bifunctional protein which converts pterin-4a-carbinolamine to quinoid dihydrobiopterin and functions as dimerization cofactor for hnf-1alpha; deficiency results in an atypical form of phenylketonuria; proposed EC 4.2.1.96 ... Registry number: EC 4.2.1.- ... Synonym: pt-c dehydratase, phenylalanine hydroxylase-stimulating protein, pter …

pterion
A craniometric point in the region of the sphenoid fontanelle, at the junction of the greater wing of the sphenoid, the squamous temporal, the frontal, and the parietal bones; it intersects the course of the anterior division of the middle meningeal artery. ... Origin: G. Pteron, wing ... (05 Mar 2000) ...

pteroic acid
A constituent of folic acid, containing p-aminobenzoic acid and pteridine linked by a -CH2-group between the amino group of the former and C-6 of the latter. ... (05 Mar 2000) ...

pteropoda
<zoology> A class of Mollusca in which the anterior lobes of the foot are developed in the form of broad, thin, winglike organs, with which they swim at near the surface of the sea. ... The Pteropoda are divided into two orders: Cymnosomata, which have the body entirely naked and the head distinct from the wings; and Thecosomata, which have a …

pteropterin
Pteroyl-gamma-glutamyl-gamma-glutamylglutamic acid;a folic acid conjugate, a principle chemically similar to folic acid except that it contains three molecules of glutamic acid instead of one, in g linkage. ... Synonym: fermentation Lactobacillus casei factor, pteroyltriglutamic acid. ... (05 Mar 2000) ...

pterosauria
<paleontology> An extinct order of flying reptiles of the Mesozoic age; the pterodactyls. ... Synonym: Pterodactyli, and Ornithosauria. ... The wings were formed, like those of bats, by a leathery expansion of the skin, principally supported by the greatly enlarged outer or ' little' fingers of the hands. The American Cretaceous pterodactyls ha …

pteroyl polyglutamate hydrolase
<enzyme> Catalyses the hydrolysis of pteroylpolyglutamic acids in gamma linkage to pterolylmonoglutamic acid and free glutamic acid. ... Registry number: EC 3.4.22.12 ... (12 Dec 1998) ...

pteroylmonoglutamic acid
Synonym for folic acid ... <biochemistry> Pteridine derivative that is abundant in liver and green plants and is a growth factor for some bacteria. The biochemically active form is tetrahydrofolate (see folate). ... (12 Nov 1997) ...

pteroylpolyglutamate synthase
<enzyme> Catalyses formation of amide bond between the gamma-carboxyl group of a folate and the amino group of glutamic acid ... Registry number: EC 6.3.1.- ... (26 Jun 1999) ...

pteroylpolyglutamic acids
Derivatives of folic acid (pteroylglutamic acid). In gamma-glutamyl linkage they are found in many tissues. They are converted to folic acid by the action of pteroylpolyglutamate hydrolase or synthesised from folic acid by the action of folate polyglutamate synthetase. Synthetic pteroylpolyglutamic acids, which are in alpha-glutamyl linkage, are ac …

pteroyltriglutamic acid
Synonym for pteropterin ... Pteroyl-gamma-glutamyl-gamma-glutamylglutamic acid;a folic acid conjugate, a principle chemically similar to folic acid except that it contains three molecules of glutamic acid instead of one, in g linkage. ... Synonym: fermentation Lactobacillus casei factor, pteroyltriglutamic acid. ... (05 Mar 2000) ...

pterygium colli
A congenital, usually bilateral, web or tight band of skin of the neck extending from the acromion to the mastoid seen in Turner's syndrome and Noonan's syndrome. ... (05 Mar 2000) ...

pterygium syndrome
<syndrome> Webbing of the neck, antecubital fossae, and popliteal fossae with flexion deformities of the extremities and anomalies of the vertebrae; observed in pseudo-Turner's syndrome and Turner's syndrome; mendelian inheritance of all those kinds. ... (05 Mar 2000) ...

pterygo-
Wing-shaped, usually the pterygoid process. ... Origin: G. Pteryx, pterygos, wing ... (05 Mar 2000) ...

pterygoid
<anatomy> Like a bird's wing in form; as, a pterygoid bone. ... Of, pertaining to, or in the region of, the pterygoid bones, pterygoid processes, or the whole sphenoid bone. ... A pterygoid bone. ... <anatomy> Pterygoid bone, a process projecting downward from either side of the sphenoid bone, in man divided into two plates, an inner and a …

pterygoid canal
An opening through the base of the medial pterygoid process of the sphenoid bone through which pass the artery, vein, and nerve of the pterygoid canal. ... Synonym: canalis pterygoideus, vidian canal. ... (05 Mar 2000) ...

pterygoid chest
Synonym for flat chest ... A chest in which the anteroposterior diameter is shorter than the average. ... Synonym: alar chest, pterygoid chest. ... (05 Mar 2000) ...

pterygoid depression
Synonym for pterygoid fovea ... A depression on the antero-medial side of the neck of the condylar process of the mandible, giving attachment to the lateral pterygoid muscle. ... Synonym: fovea pterygoidea, pterygoid depression, pterygoid pit. ... (05 Mar 2000) ...

pterygoid fissure
The cleft between the medial and lateral laminae of the pterygoid process of the sphenoid bone into which the pyramidal process of the palatine bone is fitted. ... Synonym: incisura pterygoidea, fissura pterygoidea, pterygoid notch. ... (05 Mar 2000) ...

pterygoid fossa
The fossa formed by the divergence posteriorly of the plates of the pterygoid process of the sphenoid bone; it lodges the origin of medial pterygoid and the tensor palati muscles. ... Synonym: fossa pterygoidea. ... (05 Mar 2000) ...

pterygoid fovea
A depression on the antero-medial side of the neck of the condylar process of the mandible, giving attachment to the lateral pterygoid muscle. ... Synonym: fovea pterygoidea, pterygoid depression, pterygoid pit. ... (05 Mar 2000) ...

pterygoid hamulus
The inferior, hook-shaped extremity of the medial plate of the pterygoid process. ... Synonym: hamulus pterygoideus, hamular process of sphenoid bone. ... (05 Mar 2000) ...

pterygoid laminae
See: lateral pterygoid plate, medial pterygoid plate. ... (05 Mar 2000) ...

pterygoid muscles
Two of the masticatory muscles: the internal, or medial, pterygoid muscle and external, or lateral, pterygoid muscle. Action of the former is closing the jaws and that of the latter is opening the jaws, protruding the mandible, and moving the mandible from side to side. ... (12 Dec 1998) ...

pterygoid nerve
<anatomy, nerve> One of two motor branches, lateral and medial, of the mandibular nerve, supplying the lateral and medial pterygoid muscles with fibres of the motor root of the trigeninal nerve. ... Synonym: nervus pterygoideus. ... (05 Mar 2000) ...

pterygoid notch
Synonym for pterygoid fissure ... The cleft between the medial and lateral laminae of the pterygoid process of the sphenoid bone into which the pyramidal process of the palatine bone is fitted. ... Synonym: incisura pterygoidea, fissura pterygoidea, pterygoid notch. ... (05 Mar 2000) ...

pterygoid pit
Synonym for pterygoid fovea ... A depression on the antero-medial side of the neck of the condylar process of the mandible, giving attachment to the lateral pterygoid muscle. ... Synonym: fovea pterygoidea, pterygoid depression, pterygoid pit. ... (05 Mar 2000) ...

pterygoid plates
See: lateral pterygoid plate, medial pterygoid plate. ... (05 Mar 2000) ...

pterygoid plexus
A venous plexus occupying the infratemporal fossa receiving veins accompanying the branches of the maxillary artery, and terminating posteriorly in the maxillary vein; anteriorly the pterygoid plexus drains via the deep facial vein into the facial vein. ... Synonym: plexus pterygoideus. ... (05 Mar 2000) ...

pterygoid process
A long process extending downward from the junction of the body and great wing of the sphenoid bone on either side; it is formed of two plates (lateral and medial), united anteriorly but separated below to form the pterygoid notch; the pterygoid fossa is formed by the divergence of these two plates posteriorly. ... Synonym: processus pterygoideus, o …

pterygoid ridge of sphenoid bone
Synonym for infratemporal crest ... A rough ridge marking the angle of union of the temporal and infratemporal surfaces of the greater wing of the sphenoid bone. ... Synonym: crista infratemporalis, pterygoid ridge of sphenoid bone. ... (05 Mar 2000) ...

pterygoid tubercle
A slight prominence on the posterior surface of the medial pterygoid plate, inferior and to the medial side of the pterygoid canal. ... (05 Mar 2000) ...

pterygoid tuberosity
A roughened area on the internal aspect of the mandible, giving attachment to fibres of the medial pterygoid muscle. ... Synonym: tuberositas pterygoidea. ... (05 Mar 2000) ...

pterygomandibular
Relating to the pterygoid process and the mandible. ... (05 Mar 2000) ...

pterygomandibular ligament
Synonym for pterygomandibular raphe ... A tendinous thickening of the buccopharyngeal fascia, separating and giving origin to the buccinator muscle anteriorly and the superior constrictor of the pharynx posteriorly. ... Synonym: raphe pterygomandibularis, pterygomandibular ligament. ... (05 Mar 2000) ...

pterygomandibular raphe
A tendinous thickening of the buccopharyngeal fascia, separating and giving origin to the buccinator muscle anteriorly and the superior constrictor of the pharynx posteriorly. ... Synonym: raphe pterygomandibularis, pterygomandibular ligament. ... (05 Mar 2000) ...

pterygomandibular space
The area between the mandibular ramus and the pterygoid process of the sphenoid bone. ... (05 Mar 2000) ...

pterygomaxillare
The point where the pterygoid process of the sphenoid bone and the pterygoid process of the maxilla begin to form the pterygomaxillary fissure; the lowest point of the opening is used in cephalometrics. ... (05 Mar 2000) ...

pterygomaxillary fissure
The narrow gap between the lateral pterygoid plate and the infratemporal surface of the maxilla through which the infratemporal fossa communicates with the pterygopalatine fossa; gives passage to the third part of the maxillary artery and the posterior superior alveolar arteries, veins and nerves. ... Synonym: fissura pterygomaxillaris, fissura pter …

pterygomaxillary fossa
Synonym for pterygopalatine fossa ... Sphenomaxillary fossa, a small pyramidal space, housing the pterygopalatine ganglion, between the pterygoid process, the maxilla, and the palatine bone. ... Synonym: fossa pterygopalatina, Bichat's fossa, pterygomaxillary fossa, sphenomaxillary fossa. ... (05 Mar 2000) ...

pterygomaxillary notch
The notch or fissure between the tuberosity of the maxilla and the hamulus of the pterygoid process of the sphenoid bone. ... Synonym: hamular notch. ... (05 Mar 2000) ...

pterygopalatine canal
Synonym for greater palatine canal ... The canalis formed between the maxilla and palatine bones; it transmits the descending palatine artery and the greater palatine nerve. ... Synonym: canalis palatinus major, pterygopalatine canal. ... (05 Mar 2000) ...

pterygopalatine fossa
Sphenomaxillary fossa, a small pyramidal space, housing the pterygopalatine ganglion, between the pterygoid process, the maxilla, and the palatine bone. ... Synonym: fossa pterygopalatina, Bichat's fossa, pterygomaxillary fossa, sphenomaxillary fossa. ... (05 Mar 2000) ...

pterygopalatine ganglion
A small parasympathetic ganglion in the upper part of the pterygopalatine fossa whose postsynaptic fibres supply the lacrimal, nasal, palatine and pharyngeal glands. ... Synonym: ganglion pterygopalatinum, Meckel's ganglion, nasal ganglion, sphenopalatine ganglion. ... (05 Mar 2000) ...

pterygopalatine groove
Synonym for greater palatine groove ... A groove on both the body of the maxilla and the perpendicular plate of the palatine bone; when the bones are articulated the grooves form the greater palatine canal. ... Synonym: sulcus palatinus major, pterygopalatine groove, sulcus for greater palatine nerve, sulcus pterygopalatinus. ... (05 Mar 2000) ...

pterygopalatine nerves
Synonym for ganglionic branches of maxillary nerve ... <anatomy, nerve> The ganglionic branches, two short sensory branches of the maxillary nerve in the pterygopalatine fossa, the fibres of which pass through the pterygopalatine ganglion without synapse. ... Synonym: radix sensoria ganglii pterygopalatini, rami ganglionici nervi maxillaris, ra …

pterygospinal ligament
Synonym for pterygospinous ligament ... <anatomy> A membranous ligament extending from the spine of the sphenoid to the upper part of the posterior border of the lateral pterygoid lamina. ... Synonym: ligamentum pterygospinale, Civinini's ligament, pterygospinal ligament. ... (05 Mar 2000) ...

pterygospinous ligament
<anatomy> A membranous ligament extending from the spine of the sphenoid to the upper part of the posterior border of the lateral pterygoid lamina. ... Synonym: ligamentum pterygospinale, Civinini's ligament, pterygospinal ligament. ... (05 Mar 2000) ...

pterygospinous process
A sharp projection from the posterior edge of the lateral pterygoid plate of the sphenoid bone. ... Synonym: processus pterygospinosus, Civinini's process. ... (05 Mar 2000) ...

pterylography
<ornithology> The study or description of the arrangement of feathers, or of the pterylae, of birds. ... (06 Mar 1998) ...

PTF
<abbreviation> Plasma thromboplastin factor. ... (05 Mar 2000) ...

PTH
<abbreviation> Parathyroid hormone; phenylthiohydantoin. ... (05 Mar 2000) ...

PTHC
<abbreviation> Percutaneous transhepatic cholangiography. ... (05 Mar 2000) ...

pthiriasis
Synonym: pediculosis pubis. ... Origin: G. Phtheiriasis, fr. Phtheir, a louse ... (05 Mar 2000) ...

pthiriasis capitis
Synonym for pediculosis capitis ... The presence of lice on the scalp, seen especially in children, with nits attached to hairs. ... Synonym: pthiriasis capitis. ... (05 Mar 2000) ...

pthiriasis corporis
Synonym for pediculosis corporis ... The presence of body lice which live in the seams of clothing. Biting causes pruritus and excoriations. ... See: parasitic melanoderma. ... Synonym: pediculosis vestimenti, pediculosis vestimentorum, pthiriasis corporis. ... (05 Mar 2000) ...

pthiriasis pubis
Presence of crab lice in the pubis and other hairy areas of the trunk, and in the eyelashes of infants and young children. ... (05 Mar 2000) ...

Pthirus
A genus of lice (family Pediculidae) formerly grouped in the genus Pediculus. The main species is Pthirus pubis (Pediculus pubis), the crab or pubic louse, a parasite that infests the pubis and neighboring hairy parts of the body. Often incorrectly spelled Phthirus or Phthirius. ... Origin: irreg. Fr. G. Phtheir, louse ... (05 Mar 2000) ...

Pti1 kinase
<enzyme> Pti1 - pto-interacting 1; pti1 is phosphorylated by pto and is involved in the hypersensitive response in tomato; genbank u28007 ... Registry number: EC 2.7.10.- ... Synonym: pti1 gene product ... (26 Jun 1999) ...

PtK2 cell
<cell culture> Cell line from Potorous tridactylis (potoroo or kangaroo rat) kidney. Often used in studies on mitosis because there are only a few large chromosomes and the cells remain flattened during mitosis. ... (18 Nov 1997) ...

PTMA
<abbreviation> Phenyltrimethylammonium. ... (05 Mar 2000) ...

ptolemaic
Of or pertaining to Ptolemy, the geographer and astronomer. ... <astronomy> Ptolemaic system, the system maintained by Ptolemy, who supposed the earth to be fixed in the center of the universe, with the sun and stars revolving around it. This theory was received for ages, until superseded by the Copernican system. ... Source: Websters Dictionar …

ptomainaemia
A condition resulting from the presence of a ptomaine in the circulating blood. ... Origin: ptomaine + G. Haima, blood ... (05 Mar 2000) ...

ptomaine
<physiology> One of a class of animal bases or alkaloids formed in the putrefaction of various kinds of albuminous matter, and closely related to the vegetable alkaloids; a cadaveric poison. The ptomaines, as a class, have their origin in dead matter, by which they are to be distinguished from the leucomaines. ... Origin: From Gr. A dead body. …

ptomatine
Synonym for ptomaine ... <physiology> One of a class of animal bases or alkaloids formed in the putrefaction of various kinds of albuminous matter, and closely related to the vegetable alkaloids; a cadaveric poison. The ptomaines, as a class, have their origin in dead matter, by which they are to be distinguished from the leucomaines. ... Origi …

ptomatropine
A ptomaine characterised by poisonous properties similar to those of atropine; formed by the action of bacteria in the decarboxylation of amino acids. ... (05 Mar 2000) ...

ptosed
Synonym for ptotic ... Relating to or marked by ptosis. ... Synonym: ptosed. ... Origin: G. Ptosis, a falling ... (05 Mar 2000) ...

ptosis
1. <anatomy> The prolapse of an organ or part. ... 2. <clinical sign> The drooping of the upper eyelid from paralysis of the third nerve or from loss of sympathetic innervation. ... Origin: Gr. Ptosis = fall ... (06 Oct 1997) ...

ptosis adiposa
Synonym for blepharochalasis ... A condition in which there is a redundancy of the skin of the upper eyelids so that a fold of skin hangs down, often concealing the tarsal margin when the eye is open. ... Synonym: ptosis adiposa. ... Origin: blepharo-+ G. Chalasis, a slackening ... (05 Mar 2000) ...

ptosis sympathetica
Synonym for Horner's syndrome ... <syndrome> A nerve condition which involves a dropping eyelid (ptosis), constricted pupil, enophthalmos and lack of sweating on one side of the face. Often seen in association with injury (for example neck fracture, penetrating injury) to the cervical sympathetic nerve trunk in the neck or a Pancoast tumour in …

ptotic
Relating to or marked by ptosis. ... Synonym: ptosed. ... Origin: G. Ptosis, a falling ... (05 Mar 2000) ...

ptotic organ
Synonym for wandering organ ... An organ with loose attachments, permitting its displacement. ... Synonym: floating organ, ptotic organ. ... (05 Mar 2000) ...

PTT
<haematology, investigation> A test used to evaluate the blood clotting. If there is a deficiency in a particular blood clotting factor, the time required for clotting will be lengthened. ... Patients with severe liver disease, Von Willebrand disease or haemophilia will have an abnormal (prolonged) PTT test. Heparin, a medication given to thin …

PTU
Propylthiouracil, an antithyroid medication. ... (12 Dec 1998) ...

ptyal-
The salivary glands, saliva. ... See: sialo-. ... Origin: G. Ptyalon ... (05 Mar 2000) ...

ptyalagogue
Synonym for sialagogue ... 1. Promoting the flow of saliva. ... 2. An agent having this action (e.g., anticholinesterase agents). ... Synonym: ptyalagogue, sialogogue. ... Origin: sial-+ G. Agogos, drawing forth ... (05 Mar 2000) ...

ptyalectasis
Synonym: sialectasis. ... Origin: ptyal-+ G. Ektasis, a stretching out ... (05 Mar 2000) ...

ptyalism
<clinical sign> The excessive flow of saliva. ... (13 Nov 1997) ...

ptyalography
Synonym for sialography ... <investigation, radiology> An X-ray study of the salivary ducts. ... A contrast material is injected into the salivary duct (within the mouth) to highlight the coarse and calibre of the ducts. This test is used to detect a stricture or blockage (for example stones, tumour) of the salivary ducts. ... (27 Sep 1997) ...

ptyalolith
Synonym for sialolith ... A salivary calculus. ... Synonym: ptyalolith. ... Origin: sialo-+ G. Lithos, stone ... (05 Mar 2000) ...

ptyalolithiasis
Synonym for sialolithiasis ... The formation or presence of a salivary calculus. ... Synonym: ptyalolithiasis, salivolithiasis. ... Origin: sialolith + G. -iasis, condition ... (05 Mar 2000) ...

ptyalolithotomy
Synonym for sialolithotomy ... <procedure> Incision of a salivary duct or gland to remove a calculus. ... Synonym: ptyalolithotomy. ... Origin: sialolith + G. Tome, incision ... (05 Mar 2000) ...

ptychotis oil
Synonym for ajowan oil ... A volatile oil distilled from the fruit of Carum copticum, one of the sources of thymol; a carminative, aromatic, and expectorant. ... Synonym: ptychotis oil. ... (05 Mar 2000) ...

ptyocrinous
Secreting by discharge of the contents of the cell, as in mucous cells. ... Origin: G. Ptyo, to spit out, + krino, to separate ... (05 Mar 2000) ...

Pu
Symbol for plutonium. ... (05 Mar 2000) ...

Pu box
<molecular biology> Purine rich sequence recognised by the product of the Sp 1 oncogene. ... (18 Nov 1997) ...

pubarche
Just as menarche means the time when menstruation begins, pubarche indicates when pubic hair begins. ... (12 Dec 1998) ...

puberal
Pubertal ... Relating to puberty. ... (05 Mar 2000) ...

pubertas praecox
Synonym: precocious puberty. ... Origin: L. ... (05 Mar 2000) ...

puberty
<paediatrics> The period during which the secondary sex characteristics begin to develop and the capability of sexual reproduction is attained. ... Origin: L. Pubertas ... (18 Nov 1997) ...

puberty, delayed
Unusually late sexual maturity. ... (12 Dec 1998) ...

puberty, precocious
Unusually early sexual maturity. ... (12 Dec 1998) ...