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

ansa sacralis
A nerve cord connecting one or both of the sympathetic nerve trunks with the ganglion impar. ... (05 Mar 2000) ...

ansa subclavia
A nerve cord connecting the middle cervical and stellate sympathetic ganglia, forming a loop around the subclavian artery. ... Synonym: subclavian loop, Vieussens' ansa, Vieussens' loop. ... (05 Mar 2000) ...

ansae nervorum spinalium
Synonym for loops of spinal nerves ... Loops of the spinal nerves, connecting ventral primary rami of the spinal nerves. ... Synonym: ansae nervorum spinalium. ... (05 Mar 2000) ...

ansate
Synonym for ansiform ... In the shape of a loop or arc. ... Synonym: ansate. ... Origin: L. Ansa, handle, + forma, shape ... (05 Mar 2000) ...

anserine bursa
<anatomy> The bursa between the tibial collateral ligament of the knee joint and the tendons of the sartorius, gracilis, and semitendinosus muscles. ... Synonym: bursa anserina, tibial intertendinous bursa. ... (05 Mar 2000) ...

anserine bursitis
Inflammation of the anserine bursa lying between the pes anserinus and the upper medial surface of the tibia. ... (05 Mar 2000) ...

ansiform
In the shape of a loop or arc. ... Synonym: ansate. ... Origin: L. Ansa, handle, + forma, shape ... (05 Mar 2000) ...

ansiform lobule
Comprises the greater part of the hemisphere of the cerebellum; its superior and inferior surfaces are separated by the horizontal fissure into major parts known as crus I (superior semilunar lobule) and crus II (inferior semilunar lobule). ... (05 Mar 2000) ...

ansotomy
1. <procedure> Surgical division of a loop, usually a constricting loop. ... 2. Section of the ansa lenticularis for treatment of striatal syndromes. ... Origin: L. Ansa, handle + G. Tome, cutting ... (05 Mar 2000) ...

answer
1. To speak or write by way of return (originally, to a charge), or in reply; to make response. 'There was no voice, nor any that answered.' (1 Kings xviii. 26) ... 2. To make a satisfactory response or return. Hence: To render account, or to be responsible; to be accountable; to make amends; as, the man must answer to his employer for the money int …

answerable
1. Obliged to answer; liable to be called to account; liable to pay, indemnify, or make good; accountable; amenable; responsible; as, an agent is answerable to his principal; to be answerable for a debt, or for damages. 'Will any man argue that . . . He can not be justly punished, but is answerable only to God?' (Swift) ... 2. Capable of being answe …

ant
<zoology> A hymenopterous insect of the Linnaean genus Formica, which is now made a family of several genera; an emmet; a pismire. ... Among ants, as among bees, there are neuter or working ants, besides the males and females; the former are without wings. Ants live together in swarms, usually raising hillocks of earth, variously chambered wit …

ant venoms
Venoms from the superfamily formicoidea, ants. They may contain protein factors and toxins, histamine, enzymes, and alkaloids and are often allergenic or immunogenic. ... (12 Dec 1998) ...

antacid
<pharmacology> A substance that counteracts or neutralises acidity, usually of the stomach. ... Origin: L. Acidus = sour ... (16 Dec 1997) ...

antacids
Substances that counteract or neutralise acidity. They are used mainly for the treatment of gastrointestinal irritation or ulcers. ... (12 Dec 1998) ...

antagonism
An interaction between chemicals in which one partially or completelyinhibits the effect of the other (for example, a drug that blocks a hormone's receptor site would be a hormone antagonist). ... (09 Oct 1997) ...

antagonist
<pharmacology> A substance that tends to nullify the action of another, as a drug that binds to a cell receptor without eliciting a biological response. ... Origin: Gr. Antagonistes = an opponent ... (18 Nov 1997) ...

antagonistic effect
This is the consequence of one chemical (or group of chemicals) counteracting the effects of another chemical, the opposing chemicals cancel out each other's effects. ... (09 Oct 1997) ...

antagonistic muscles
Those having an opposite function, the contraction of one having the potential, in theory, to 'neutralise' that of the other. ... (05 Mar 2000) ...

antagonistic reflexes
Reflex's which do not act toward a common purpose, and cannot together traverse the final common path. ... (05 Mar 2000) ...

antalgesia
Rarely used term for lowering of a previous elevation in pain threshold. ... Origin: anti-+ G. Algesis, sense of pain ... (05 Mar 2000) ...

antalgic gait
A characteristic gait resulting from pain on weightbearing in which the stance phase of gait is shortened on the affected side. ... (05 Mar 2000) ...

antalkaline
Reducing or neutralizing alkalinity. ... (05 Mar 2000) ...

antanaclasis
A figure which consists in repeating the same word in a different sense; as, Learn some craft when young, that when old you may live without craft. ... A repetition of words beginning a sentence, after a long parenthesis; as, Shall that heart (which not only feels them, but which has all motions of life placed in them), shall that heart, etc. ... Ori …

antarctic regions
The continent lying around the south pole and the southern waters of the atlantic, pacific, and indian oceans. It includes the falkland islands dependencies. ... (12 Dec 1998) ...

antares
<radiobiology> Laser-target irradiation system (i.e., laser fusion research device) at Los Alamos National Lab, was operational in 1982. (The author would welcome current information.) ... (09 Oct 1997) ...

antasthenic
1. Strengthening or invigorating. ... 2. An agent possessing such qualities. ... Origin: anti-+ G. Astheneia, weakness ... (05 Mar 2000) ...

antatrophic
1. Preventing or curing atrophy. ... 2. An agent that promotes the restoration of atrophied structures. ... (05 Mar 2000) ...

antazoline
<chemical> An antagonist of histamine h1 receptors. ... Pharmacological action: anti-allergic agents, histamine h1 antagonists. ... Chemical name: 1H-Imidazole-2-methanamine, 4,5-dihydro-N-phenyl-N-(phenylmethyl)- ... (12 Dec 1998) ...

antazoline hydrochloride
2-(N-benzylanilino-methyl)-2-imidazoline hydrochloride;a histamine-antagonizing agent used in treating allergy; also available as antazoline hydrochloride phosphate. ... Synonym: phenazoline hydrochloride. ... (05 Mar 2000) ...

ante cibum
Before a meal. The plural is ante cibos, before meals. ... Origin: L. ... (05 Mar 2000) ...

ante-
Before, in front of (in time or place or order). ... See: pre-, pro-. ... Origin: L. Ante, before, in front of ... (05 Mar 2000) ...

antebrachial
Relating to the forearm. ... (05 Mar 2000) ...

antebrachial fascia
It is continuous with the brachial fascia; in the region of the wrist it forms two thickened bands, the extensor and flexor retinacula. ... Synonym: fascia antebrachii, deep fascia of forearm, fascia of forearm. ... (05 Mar 2000) ...

antebrachial flexor retinaculum
Thickening of distal antebrachial fascia just proximal to radiocarpal (wrist) joint. Continuous with extensor retinaculum at margins of forearm. This structure is distinct from the transverse carpal ligament, commonly called 'the flexor retinaculum,' which forms the roof of the carpal tunnel. ... Synonym: flexor retinaculum of forearm, palmar carpal …

antebrachium
Synonym: forearm. ... Origin: ante-+ L. Brachium, arm ... (05 Mar 2000) ...

antecardium
Synonym for precordia ... The epigastrium and anterior surface of the lower part of the thorax. ... Synonym: antecardium. ... Origin: L. Praecordia (ntr. Pl. Only), the diaphragm, the entrails, fr. Prae, before, + cor (cord-), heart ... (05 Mar 2000) ...

antecedent
Existing or occurring before in time or order often with consequential effects. ... (18 Nov 1997) ...

antecedent sign
Synonym for prodromic sign ... <clinical sign> A sign that appears during the prodrome of a disease. ... Synonym: antecedent sign. ... (05 Mar 2000) ...

antecubital
In front of the elbow. ... Origin: ante-+ L. Cubitum, elbow ... (05 Mar 2000) ...

antecubital space
Synonym for cubital fossa ... The fossa in front of the elbow, bounded laterally and medially by the humeral origins of the extensors and flexors of the forearm, respectively, and superiorly by an imaginary line connecting the humeral condyles. ... Synonym: fossa cubitalis, antecubital space, chelidon, triangle of elbow. ... (05 Mar 2000) ...

antefebrile
Rarely used term for antepyretic. ... Origin: ante-+ L. Febris, fever ... (05 Mar 2000) ...

anteflex
To bend forward, or cause to bend forward. ... Origin: ante-+ L. Flecto, pp. Flexus, to bend ... (05 Mar 2000) ...

anteflexion of iris
Rarely used term for an iris that is in part, folded forward after a severe iridodialysis so that the pigmented layer faces forward. ... (05 Mar 2000) ...

antegonial notch
The highest point of the notch or concavity of the lower border of the ramus where it joins the body of the mandible. ... (05 Mar 2000) ...

antegrade
In the direction of normal movement, as in blood flow or peristalsis. ... Origin: ante-+ L. Gradior, to walk ... (05 Mar 2000) ...

antegrade cardioplegia
Cardioplegia effected by delivery of solutions through the coronary arteries. ... (05 Mar 2000) ...

antegrade conduction
Synonym for anterograde conduction ... Conduction in the expected normal direction between any cardiac structures. ... Synonym: antegrade conduction, forward conduction, orthograde conduction. ... (05 Mar 2000) ...

antegrade pyelography
Antegrade urography in which the contrast medium is injected into the renal calices or pelvis. ... (05 Mar 2000) ...

antelope
<zoology> One of a group of ruminant quadrupeds, intermediate between the deer and the goat. The horns are usually annulated, or ringed. There are many species in Africa and Asia. 'The antelope and wolf both fierce and fell.' (Spenser) ... The common or bezoar antelope of India is Antilope bezoartica. The chamois of the Alps, the gazelle, the …

antelopes
Any of various ruminant mammals of the order bovidae. They include numerous species in africa and the american pronghorn. ... (12 Dec 1998) ...

antemortem
Before death. ... Compare: postmortem. ... Origin: ante-+ L. Acc. Case of mors (mort-), death ... (05 Mar 2000) ...

antemortem clot
A blood clot, found at autopsy, formed in any of the heart cavities or the great vessels before death. ... (05 Mar 2000) ...

antemortem thrombus
A clot formed in the circulation during life. ... (05 Mar 2000) ...

antenatal
<epidemiology> The period between conception and birth. Same as prenatal. ... (05 Dec 1998) ...

antenatal diagnosis
Synonym for prenatal diagnosis ... Determination of the nature of a pathological condition or disease in the postimplantation embryo, foetus, or pregnant female before birth. ... (12 Dec 1998) ...

antenna
Origin: L. Antenna sail-yard; NL, a feeler, horn of an insect. ... <zoology> A movable, articulated organ of sensation, attached to the heads of insects and Crustacea. There are two in the former, and usually four in the latter. They are used as organs of touch, and in some species of Crustacea the cavity of the ear is situated near the basal …

antennal complex
<cell biology> Light harvesting complexes (LHC) of protein and pigment in or on photosynthetic membranes of bacteria are organised into arrays, called antennae. They transfer photon energy to reaction centres. ... (18 Nov 1997) ...

Antennapedia
<molecular biology> Homeotic gene of Drosophila, controlling thoracic/head fate determination. In addition to the homeobox, there is also a 6 amino acid antennapedia specific consensus, shared by a range of homeotic genes in human, mouse, chicken, Xenopus, newt, zebrafish and Caenorhabditis. ... (18 Nov 1997) ...

antennapedia complex
A set of mutations that cause developmental defects in the limbs and appendages of the fruit fly Drosophila melanogaster, such as the development of legs (-pedia) in the places where antennae are supposed to be. ... (09 Oct 1997) ...

antepartum
Before labour or childbirth. ... Compare: intrapartum, postpartum. ... Origin: ante-+ L. Pario, pp. Partus, to bring forth ... (05 Mar 2000) ...

anteposition
Forward or anterior position. ... (05 Mar 2000) ...

anteprostate
An obsolete term for bulbourethral gland. ... (05 Mar 2000) ...

antepyretic
Before the occurrence of fever; before the period of reaction following shock. ... Origin: ante-+ G. Pyretos, fever ... (05 Mar 2000) ...

anterior
<anatomy> Toward the front or in front of. ... (27 Sep 1997) ...

anterior ampullar nerve
<anatomy, nerve> A branch of the utriculoampullar nerve that supplies the crista ampullaris of the anterior semicircular duct. ... Synonym: nervus ampullaris anterior. ... (05 Mar 2000) ...

anterior antebrachial nerve
Synonym for anterior interosseous nerve ... <anatomy, nerve> A branch of the median arising in elbow region, running on interosseous membrane, supplying the flexor pollicis longus, part of flexor digitorum profundus and the pronator quadratus muscles, as well as radiocarpal and intercarpal joints. ... Synonym: nervus interosseus anterior, ramus …

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

anterior aphasia
Synonym for motor aphasia ... A type of aphasia in which there is a deficit in speech production or language output, often accompanied by a deficit in communicating by writing, signs, etc. The patient is aware of his impairment. ... Synonym: anterior aphasia, ataxic aphasia, Broca's aphasia, expressive aphasia, nonfluent aphasia. ... (05 Mar 2000) ...

anterior arch of atlas
An arch that connects the lateral masses of the atlas anteriorly and articulates with the anterior articular facet of the dens of the axis. ... Synonym: arcus anterior atlantis. ... (05 Mar 2000) ...

anterior asynclitism
Synonym for Nagele obliquity ... Inclination of the foetal head in cases of flat pelvis, so that the biparietal diameter is oblique in relation to the plane of the pelvic brim, the anterior parietal bone presenting to the parturient canal. ... Synonym: anterior asynclitism. ... (05 Mar 2000) ...

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 auriculam, zygomaticoauricularis.< …

anterior auricular groove
Synonym for anterior notch of ear ... A notch between the supratragic tubercle and the crus of the helix. ... Synonym: incisura anterior auris, anterior auricular groove, auricular notch, sulcus auriculae anterior. ... (05 Mar 2000) ...

anterior auricular nerves
Branches of the auriculotemporal nerve that supply the tragus and upper part of the auricle. ... Synonym: nervi auriculares anteriores. ... (05 Mar 2000) ...

anterior auricular vein
<anatomy, vein> One of several veins draining the auricle and acoustic meatus and emptying into the retromandibular vein. ... Synonym: vena auricularis anterior, vena preauricularis. ... (05 Mar 2000) ...

anterior axillary fold
Bounds axilla anteriorly; formed by skin and fascia overlying inferior border of pectoralis major muscle. ... (05 Mar 2000) ...

anterior axillary line
A vertical line extending inferiorly from the anterior axillary fold. ... Synonym: linea axillaris anterior, linea preaxillaris, preaxillary line. ... (05 Mar 2000) ...

anterior basal branch
Anterior basal branch of basal parts of the inferior lobar branches of the right and left pulmonary arteries, and superior basal branches of the right and left inferior pulmonary veins. ... Synonym: ramus basalis anterior. ... (05 Mar 2000) ...

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) ...

anterior belly of digastric muscle
<anatomy> The portion of the digastric muscle which extends anteriorly from the intermediate tendon, and attaches to the posterior aspect of the mandible. ... Synonym: venter anterior musculi digastrici. ... (05 Mar 2000) ...

anterior border
The ventral or most forward margin of a structure. ... Synonym: anterior margin, ventral border. ... (05 Mar 2000) ...

anterior border of eyelids
The anterior edge of the free margin of each eyelid, along close to which the eyelashes are embedded. ... Synonym: limbus palpebrales anteriores. ... (05 Mar 2000) ...

anterior border of fibula
A ridge on the shaft of the fibula to which is attached the anterior intermuscular septum of the leg. ... Synonym: margo anterior fibulae. ... (05 Mar 2000) ...

anterior border of lung
The thin anteromedial or sternal edge of the lung which overlaps the pericardial sac anteriorly and forms the boundary between the mediastinal and costal surfaces. ... Synonym: margo anterior pulmonis. ... (05 Mar 2000) ...

anterior border of pancreas
The sharp margin between the anterior and inferior surfaces of the pancreas. ... Synonym: margo anterior pancreatis. ... (05 Mar 2000) ...

anterior border of radius
The ridge on the shaft of the radius extending from the radial tuberosity to the anterior part of the styloid process. ... Synonym: margo anterior radii. ... (05 Mar 2000) ...

anterior border of testis
An imaginary convex line demarcating the lateral and medial surfaces. ... Synonym: margo anterior testis. ... (05 Mar 2000) ...

anterior border of tibia
The sharp subcutaneous ridge of the tibia that extends from the tuberosity to the anterior part of the medial malleolus. ... Synonym: margo anterior tibiae, anticnemion, shin, tibial crest. ... (05 Mar 2000) ...

anterior border of ulna
The ridge on the body of the ulna that extends from the tuberosity to the anterior part of the styloid process. ... Synonym: margo anterior ulnae. ... (05 Mar 2000) ...

anterior brachial region
The anterior region of the arm. ... (05 Mar 2000) ...

anterior branch
The anterior branch of the following: ... great auricular nerve ... lateral cerebral sulcus ... left and right superior pulmonary veins ... medial cutaneous nerve of the forearm ... obturator artery ... obturator nerve ... renal artery ... right branch of portal vein ... right hepatic duct ... superior thyroid artery ... ulnar recurrent artery. ... Synonym: ra …

anterior caecal artery
<anatomy, artery> An artery that originates from the ileocolic artery and supplies the anterior region of caecum. ... Synonym: arteria caecalis anterior. ... (05 May 2002) ...

anterior cardiac veins
Two or three small veins in the anterior wall of the right ventricle opening directly into the right atrium independently of the coronary sinus. ... Synonym: venae cordis anteriores. ... (05 Mar 2000) ...

anterior cardinal veins
See: cardinal veins. ... (05 Mar 2000) ...

anterior carpal region
The anterior part of the wrist. ... Synonym: regio carpalis anterior. ... (05 Mar 2000) ...

anterior cells
Synonym for anterior ethmoidal air cells ... The anterior group of air cells of the ethmoidal sinus's; each sinus communicates with the middle meatus of the nasal cavity. ... Synonym: sinus ethmoidales anteriores, anterior cells, anterior sinuses, cellulae anteriores. ... (05 Mar 2000) ...

anterior central convolution
Synonym for precentral gyrus ... Bounded posteriorly by the central sulcus and anteriorly by the precentral sulcus. ... Synonym: gyrus precentralis, anterior central convolution, anterior central gyrus, ascending frontal convolution, ascending frontal gyrus. ... (05 Mar 2000) ...

anterior central gyrus
Synonym for precentral gyrus ... Bounded posteriorly by the central sulcus and anteriorly by the precentral sulcus. ... Synonym: gyrus precentralis, anterior central convolution, anterior central gyrus, ascending frontal convolution, ascending frontal gyrus. ... (05 Mar 2000) ...

anterior centriole
Synonym for proximal centriole ... The centriole that lies in a depression in the wall of the posterior portion of the nucleus of the developing spermatozoon. ... Synonym: anterior centriole. ... (05 Mar 2000) ...

anterior cerebellar notch
A wide, shallow notch on the anterior surface of the cerebellum occupied laterally by the superior cerebellar peduncles and the inferior quadrigeminal bodies medially. ... Synonym: anterior notch of cerebellum, incisura cerebelli anterior, semilunar notch. ... (05 Mar 2000) ...