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


positive supporting reactions
Consisting of those reflex muscular contractions whereby the body is supported against gravity; seen in an exaggerated form in the decerebrate animal, negative supporting reaction's, consisting of inhibition of the extensor muscles and unfixing of the joints which thus enable the limb to be flexed and moved into a new position. ... Synonym: supporti …

positive taxis
The attraction of protoplasm toward a stimulus. ... (05 Mar 2000) ...

positive thermotaxis
Attraction of a plant or animal to heat. ... (05 Mar 2000) ...

positive transference
Transference characterised by predominantly friendly, respectful, and positive feelings on the part of the patient toward the analyst. ... (05 Mar 2000) ...

positive-pressure respiration
A method of mechanical ventilation in which pressure is maintained to increase the volume of gas remaining in the lungs at the end of expiration, thus reducing the shunting of blood through the lungs and improving gas exchange. ... (12 Dec 1998) ...

positive, false
A result that is erroneously positive when a situation is normal. An example of a false positive: a particular test designed to detect cancer of the toenail is positive but the person does not have toenail cancer. ... (12 Dec 1998) ...

positively
In a positive manner; absolutely; really; expressly; with certainty; indubitably; peremptorily; dogmatically; opposed to negatively. 'Good and evil which is removed may be esteemed good or evil comparatively, and positively simply.' (Bacon) 'Give me some breath, some little pause, my lord, Before I positively speak herein.' (Shak) 'I would ask . . …

positively bathmotropic
Increasing nervous or muscular irritability. ... (05 Mar 2000) ...

positively dromotropic
Acting to increase conduction velocity. ... (05 Mar 2000) ...

positron
A subatomic particle of mass and charge equal to the electron but of opposite (i.e., positive) charge. ... Synonym: positive electron. ... (05 Mar 2000) ...

positron emission tomography
<radiology> A highly specialised research imaging technique using short lived radioactive substances - usually those made with a cyclotron. This technique is very sensitive in picking up active tumour tissue but does not measure the size of it. ... Tomographic images are formed by computer analysis of photons detected from annihilation of posi …

posologic
Relating to posology. ... (05 Mar 2000) ...

posology
<pharmacology, study> The science or doctrine of doses; dosology. ... Origin: Gr. How much: cf. F. Posologie. ... (04 Mar 1998) ...

possess
1. To occupy in person; to hold or actually have in one's own keeping; to have and to hold. 'Houses and fields and vineyards shall be possessed again in this land.' (Jer. Xxxii. 15) 'Yet beauty, though injurious, hath strange power, After offense returning, to regain Love once possessed.' (Milton) ... 2. To have the legal title to; to have a just ri …

possibility
Origin: F. Possibilite, L. Possibilitas. ... 1. The quality or state of being possible; the power of happening, being, or existing. 'All possibility of error.' . 'Latent possibilities of excellence.' ... 2. That which is possible; a contingency; a thing or event that may not happen; a contingent interest, as in real or personal estate. ... Source: Web …

possible
Capable of existing or occurring, or of being conceived or thought of; able to happen; capable of being done; not contrary to the nature of things; sometimes used to express extreme improbability; barely able to be, or to come to pass; as, possibly he is honest, as it is possible that Judas meant no wrong. 'With God all things are possible.' (Matt. …

post
1. To travel with post horses; figuratively, to travel in haste. 'Post seedily to my lord your husband.' 'And post o'er land and ocean without rest.' (Milton) ... 2. To rise and sink in the saddle, in accordance with the motion of the horse, especially. In trotting. ... Origin: Cf. OF. Poster. See 4th Post. ... 1. A piece of timber, metal, or other so …

post and core technique
Use of a metal casting, usually with a post in the pulp or root canal, designed to support and retain an artificial crown. ... (12 Dec 1998) ...

post implant
That portion of an implant substructure that protrudes through the mucosa to connect with the restoration. ... (05 Mar 2000) ...

post-aeration
The introduction of oxygen into waste water to further reduce BOD and COD after secondary or advanced treatment. ... (05 Dec 1998) ...

post-captain
A captain of a war vessel whose name appeared, or was 'posted,' in the seniority list of the British navy, as distinguished from a commander whose name was not so posted. The term was also used in the United States navy; but no such commission as post-captain was ever recognised in either service, and the term has fallen into disuse. ... Source: Web …

post-ictal state
A period of confusion, lethargy and deep breathing that may last for 15 minutes to several hours after the cessation of a generalised seizure. ... (27 Sep 1997) ...

post-kala azar dermal leishmanoid
A chronic, progressive, granulomatous, nonulcerating hypopigmented nodular cutaneous outbreak that may appear 6 months to 5 years after spontaneous or drug cure of visceral leishmaniasis (kala azar); this condition was first described in India and is most characteristic of kala azar in that country. ... Synonym: dermal leishmanoid. ... (05 Mar 2000)< …

post-marketing surveillance
Procedure implemented after a drug has been licensed for public use, designed to provide information on use and on occurrence of side effects, adverse effects, etc. ... (05 Mar 2000) ...

post-steady state
Any period of time, particularly in an enzyme-catalyzed reaction, after the steady-state interval; e.g., when the rate of product formation is declining in an enzyme-catalyzed reaction. ... (05 Mar 2000) ...

post-stenotic dilation
Dilation of an artery, most commonly the pulmonary artery or the aorta, distal to an area of narrowing. ... (05 Mar 2000) ...

post-term infant
A baby born 2 weeks (14 days) or more after the usual 9 months (280 days) of gestation, as calculated from the last menstrual period (lmp). This is an important calculation, since, if delivery is delayed 3 weeks beyond term, the infant mortality rate skyrockets to 3 times normal. ... (12 Dec 1998) ...

post-transcriptional processing
The enzymatic processing of the primary RNA transcript, which producesmessenger RNA and transfer RNA. ... (09 Oct 1997) ...

post-translational modification
The enzymatic processing of a polypeptide chain after translation from messenger RNA and after peptide bond formation has occurred. ... Examples include glycosylation, acylation, limited proteolysis, phosphorylation, isoprenylation. ... (10 Oct 1997) ...

postacetabular
Posterior to the acetabular cavity. ... (05 Mar 2000) ...

postadolescence
The period after adolescence or puberty. ... (05 Mar 2000) ...

postadrenalectomy syndrome
Synonym for nelson syndrome ... <syndrome> A syndrome characterised by deep pigmentation and the presence of an acth-msh secreting adenoma of the pituitary gland developing after adrenalectomy for cushing's syndrome. at present it is not known whether the adenoma occurs de novo or represents enlargement of a previously undetected tumour. ... (1 …

postage stamp grafts
Small pieces cut from a sheet of split-thickness graft. ... (05 Mar 2000) ...

postal service
The functions and activities carried out by the u.s. Postal service, foreign postal services, and private postal services such as federal express. ... (12 Dec 1998) ...

postanal gut
An extension of the hindgut caudal to the point at which the anal opening is formed. ... Synonym: postcloacal gut, tailgut. ... (05 Mar 2000) ...

postanesthesia nursing
The specialty or practice of nursing in the care of patients in the recovery room following surgery and/or anaesthesia. ... (12 Dec 1998) ...

postanesthetic
Occurring after anaesthesia. ... (05 Mar 2000) ...

postapoplectic
Occurring after an attack of apoplexy. ... (05 Mar 2000) ...

postarsphenamine jaundice
Liver toxicity, causing jaundice, in a patient who has received arsphenamine. ... (05 Mar 2000) ...

postaxillary line
Synonym for posterior axillary line ... A vertical line extending inferiorly from the posterior axillary fold. ... Synonym: linea axillaris posterior, linea postaxillaris, postaxillary line. ... (05 Mar 2000) ...

postbasic stare
An obsolete term for the appearance of a child with a posterior basic meningitis, due to retraction of the upper eyelid (Collier's sign) and downward rotation of the eye. ... (05 Mar 2000) ...

postbrachial
On or in the posterior part of the upper arm. ... (05 Mar 2000) ...

postbulbar duodenal ulcers
<radiology> Peptic ulcer disease, only 5% of benign ulcers are postbulbar, Zollinger-Ellison syndrome (gastrinoma), 25% postbulbar, benign tumour (especially leiomyoma), malignant tumour, primary duodenal carcinoma, invasion (nnodes, pancreas, colon, kidney, gall bladder), malignant melanoma, Crohn's disease, TB, aorticoduodenal fistula, simu …

postcapillary venule
That portion of the blood circulation immediately downstream of the capillary network, the region having the lowest wall shear stress and the most common site of leucocytic margination and endothelial transmigration (diapedesis). ... (18 Nov 1997) ...

postcapillary venules
The microvasculature immediately following the capillaries, ranging in size from 10 to 50 um, and characterised by investment of pericytes; they are the site of extravasation of blood cells, are particularly sensitive to histamine, and are believed to be important in blood-interstitial fluid exchanges. ... Synonym: pericytic venules. ... (05 Mar 2000 …

postcardinal
Relating to the posterior cardinal veins. ... (05 Mar 2000) ...

postcardiotomy syndrome
Synonym for postpericardiotomy syndrome ... <syndrome> A febrile illness associated with pericardial and sometimes pleuropulmonary reaction that often follows extensive pericardiotomy. ... (12 Dec 1998) ...

postcaval
Relating to the inferior vena cava. ... (05 Mar 2000) ...

postcaval ureter
Congenital defect where the right ureter passes deep to the inferior vena cava on its descent to the bladder. ... (05 Mar 2000) ...

postcentral
Referring to the cerebral convolution forming the posterior bank of the central sulcus: the postcentral gyrus. ... (05 Mar 2000) ...

postcentral area
The cortex of the postcentral gyrus. ... (05 Mar 2000) ...

postcentral artery
Synonym for postcentral sulcal artery ... <anatomy, artery> A branch of the terminal part of the middle cerebral artery distributing to the cortex on either side of the postcentral sulcus. ... Synonym: arteria sulci postcentralis, artery of postcentral sulcus, postcentral artery. ... (05 Mar 2000) ...

postcentral fissure
A fissure on the superior surface of the cerebellum separating the culmen from the central lobule. ... (05 Mar 2000) ...

postcentral gyrus
The anterior convolution of the parietal lobe, bounded in front by the central sulcus (fissure of Rolando) and posteriorly by the interparietal sulcus. ... Synonym: gyrus postcentralis, ascending parietal convolution, ascending parietal gyrus, posterior central convolution, posterior central gyrus. ... (05 Mar 2000) ...

postcentral sulcal artery
<anatomy, artery> A branch of the terminal part of the middle cerebral artery distributing to the cortex on either side of the postcentral sulcus. ... Synonym: arteria sulci postcentralis, artery of postcentral sulcus, postcentral artery. ... (05 Mar 2000) ...

postcentral sulcus
The sulcus that demarcates the postcentral gyrus from the superior and inferior parietal lobules. ... Synonym: sulcus postcentralis. ... (05 Mar 2000) ...

postcholecystectomy syndrome
<syndrome> Abdominal sequelae of biliary tract surgery as a result of various biliary tract disorders. Often the same symptoms that are present before the operation recur or postoperative symptoms such as colicky pain, bloating, nausea, and vomiting occur. There is pain on palpation of the right upper quadrant and sometimes jaundice. ... (12 D …

postchroming
Synonym for afterchroming ... Additional treatment of a tissue specimen with chromate or a metal mordant to impart special staining properties. ... Synonym: postchroming. ... (05 Mar 2000) ...

postcibal
After a meal or the taking of food. ... Origin: L. Cibum, food ... (05 Mar 2000) ...

postclavicular
Posterior to the clavicle. ... (05 Mar 2000) ...

postcloacal gut
Synonym for postanal gut ... An extension of the hindgut caudal to the point at which the anal opening is formed. ... Synonym: postcloacal gut, tailgut. ... (05 Mar 2000) ...

postcoital
After coitus. ... (05 Mar 2000) ...

postcoitus
The time immediately after coitus. ... (05 Mar 2000) ...

postcommissurotomy syndrome
Synonym for postpericardiotomy syndrome ... <syndrome> A febrile illness associated with pericardial and sometimes pleuropulmonary reaction that often follows extensive pericardiotomy. ... (12 Dec 1998) ...

postconcussion neurosis
A type of traumatic neurosis following a cerebral concussion. ... (05 Mar 2000) ...

postconcussion syndrome
Synonym for posttraumatic syndrome ... <syndrome> A clinical disorder that often follows head injury, characterised by headache, dizziness, neurasthenia, hypersensitivity to stimuli, and diminished concentration. ... Synonym: traumatic neurasthenia. ... (05 Mar 2000) ...

postcordial
<anatomy> Posterior to the heart. ... Origin: L. Cor (cord-), heart ... (05 Mar 2000) ...

postcostal
<anatomy> Behind the ribs. ... (05 Mar 2000) ...

postcostal anastomosis
<anatomy> Longitudinal anastomosis of intersegmental arteries giving rise to the vertebral artery. ... (05 Mar 2000) ...

postcrown
<dentistry> A crown, replacing the natural crown, which is retained on the stump of the root of a tooth from which the pulp has been removed, by a post or pin integral with the crown and sealed in the treated root canal with a cement. ... (05 Mar 2000) ...

postcubital
<anatomy> On or in the posterior or dorsal part of the forearm. ... (05 Mar 2000) ...

postdam
Synonym for posterior palatal seal ... The seal at the posterior border of a denture. ... See: posterior palatal seal area. ... Synonym: palatal seal, post dam, postdam, postpalatal seal. ... (05 Mar 2000) ...

postdam area
Synonym for posterior palatal seal area ... The soft tissues along the junction of the hard and soft palates on which pressure within the physiologic limits of the tissues can be applied by a denture to aid in the retention of the denture. ... Synonym: post dam area, postpalatal seal area. ... (05 Mar 2000) ...

postdiastolic
<cardiology, physiology> Following diastole. ... (05 Mar 2000) ...

postdicrotic
<physiology> Following the dicrotic wave in a sphygmogram, denoting an additional variation in the descending line of the pulse tracing. ... (05 Mar 2000) ...

postdiphtheritic
Following or occurring as a sequel of diphtheria. ... (05 Mar 2000) ...

postdiphtheritic paralysis
<otolaryngology> Paralysis affecting the uvula most frequently, but also any other muscle, due to toxic neuritis; usually appears in the second or third week following the beginning of the attack of diphtheria. ... Synonym: diphtheritic paralysis. ... (05 Mar 2000) ...

postdormital
Relating to the postdormitum. ... (05 Mar 2000) ...

postdormitum
The period of increasing consciousness between sound sleep and waking. ... Origin: L. Dormio, to sleep ... (05 Mar 2000) ...

postdrive depression
<cardiology, physiology> Slowing of the heart, often with a rate-dependent blockade of A-V conduction and/or V-A conduction following rapid atrial stimulation. ... (05 Mar 2000) ...

postductal
<anatomy> Relating to that part of the aorta distal to the aortic opening of the ductus arteriosus. ... (05 Mar 2000) ...

postencephalitic
Following encephalitis. ... (05 Mar 2000) ...

postepileptic
<neurology> Following an epileptic seizure. ... (05 Mar 2000) ...

posterior
<anatomy> Situated in back of or in the back part of or affecting the back or dorsal surface of the body. In lower animals, it refers to the caudal end of the body. ... Origin: L. = behind, neut. Posterius ... (18 Nov 1997) ...

posterior alveolar artery
Synonym for posterior superior alveolar artery ... <anatomy, artery> Origin, 3rd part of maxillary artery within pterygopalatine fossa; distribution, molar and premolar teeth, gingiva and mucous membrane of maxillary sinus. ... Synonym: arteria alveolaris superior posterior, posterior alveolar artery, posterior dental artery. ... (05 Mar 2000)
posterior ampullar nerve
<anatomy, nerve> A branch of the vestibular part of the eighth nerve that supplies the crista ampullaris of the posterior semicircular duct. ... Synonym: nervus ampullaris posterior. ... (05 Mar 2000) ...

posterior antebrachial nerve
Synonym for posterior interosseous nerve ... <anatomy, nerve> The deep terminal branch of the radial nerve, arises in the cubital region, penetrating and supplying the supinator and continuing with the posterior interosseous artery to supply all the extensor muscles in the forearm. ... Synonym: nervus interosseus posterior, nervus antebrachii p …

posterior antebrachial region
Synonym for posterior region of forearm ... The area between the radial and ulnar borders of the forearm posteriorly. ... Synonym: regio antebrachialis posterior, facies antebrachialis posterior, posterior antebrachial region, posterior surface of forearm. ... (05 Mar 2000) ...

posterior anterior jugular vein
<anatomy, vein> A variable tributary of the external jugular vein arising in the upper posterior part of the neck. ... (05 Mar 2000) ...

posterior aphasia
Synonym for sensory aphasia ... Aphasia in which there is impairment in the comprehension of spoken and written words, associated with effortless, articulated, but paraphrasic, speech and writing; malformed words, substitute words, and enologisms are charcteristic. When severe, and speech is incomprehensible, it is called jargon aphasia. The patient …

posterior arch of atlas
The posterior arch of the atlas that connects the lateral masses of the atlas posteriorly, forming the posterior wall of the vertebral canal at this level. ... Synonym: arcus posterior atlantis. ... (05 Mar 2000) ...

posterior articular surface of dens
The facet on the posterior surface of the dens of the axis that articulates with the transverse ligament of the atlas. ... Synonym: facies articularis posterior dentis. ... (05 Mar 2000) ...

posterior asynclitism
Synonym for Litzmann obliquity ... <obstetrics> Inclination of the foetal head so that the biparietal diameter is oblique in relation to the plane of the pelvic brim, the posterior parietal bone presenting to the parturient canal. ... Synonym: posterior asynclitism. ... (05 Mar 2000) ...

posterior auricular artery
<anatomy, artery> Origin: posterior aspect of external carotid just above the digastric muscle; course: ascends first between parotid gland and styloid process then between cartilage of auricle and the mastoid process; branches: muscular (digastric, stylohyoid and sternocleidomastoid), glandular (parotid), stylomastoid artery, occipital and a …

posterior auricular groove
The sulcus between the antitragus and cauda helicis overlying the antitragicohelicine fissure. ... Synonym: sulcus auriculae posterior. ... (05 Mar 2000) ...

posterior auricular muscle
<anatomy, muscle> Origin, mastoid process; insertion, posterior portion of root of auricle; action, draws back the pinna; nerve supply, facial. ... Synonym: musculus auricularis posterior, musculus retrahens aurem, musculus retrahens auriculam. ... (05 Mar 2000) ...

posterior auricular nerve
<anatomy, nerve> The first extracranial branch of the facial nerve, it passes behind the ear, supplying the posterior auricular muscle and intrinsic muscles of the auricle and, through its occipital branch, innervating the occipital belly of the occipitofrontalis muscle. ... Synonym: nervus auricularis posterior. ... (05 Mar 2000) ...

posterior auricular plexus
An autonomic plexus on the artery of this name, derived from the external carotid plexus. ... Synonym: plexus auricularis posterior. ... (05 Mar 2000) ...

posterior auricular vein
<anatomy, vein> Drains the region posterior to the ear then merges with the retromandibular vein to form the external jugular vein. ... Synonym: vena auricularis posterior. ... (05 Mar 2000) ...

posterior axillary fold
Bounds axilla posteriorly; formed by skin and fascia overlying latissimus dorsi and teres major muscles and tendons of insertion. ... (05 Mar 2000) ...