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

intermediate cervical septum
A thin septum composed of glia fibre and leptomeningeal connective tissue in the cervical spinal cord marking the border between the gracile fasciculi and cuneatus of the dorsal funiculus. ... Synonym: septum cervicale intermedium. ... (05 Mar 2000) ...

intermediate cubital vein
Synonym for median cubital vein ... <anatomy, vein> A vein which passes across the anterior aspect of the elbow from the cephalic vein to the basilic vein; commonly this vein is replaced by intermediate basilic and intermediate cephalic veins. The median cubital vein is often used for venipuncture. ... Synonym: vena intermedia cubiti, intermedi …

intermediate cuneiform bone
A bone of the distal row of the tarsus; it articulates with the medial and lateral cuneiform, navicular, and second metatarsal bones. ... Synonym: os cuneiforme intermedium, mesocuneiform, middle cuneiform bone, second cuneiform bone, wedge bone. ... (05 Mar 2000) ...

intermediate density lipoprotein
Class of lipoproteins formed in degradation of very-low-density lipoproteins; about half are cleared quickly from the plasma into the liver by receptor-mediated endocytosis; the other half are degraded into low density lipoproteins. ... (05 Mar 2000) ...

intermediate disk
Synonym for Z line ... <cell biology> The line formed where actin filaments attach between two sarcomeres. ... (11 May 1997) ...

intermediate dorsal cutaneous nerve
<anatomy, nerve> The lateral terminal branch of the superficial peroneal nerve, supplying the dorsum of the foot and dorsal nerves to the toes (except for adjacent parts of great and second toes). ... Synonym: nervus cutaneus dorsalis intermedius. ... (05 Mar 2000) ...

intermediate filament
<cell biology> A class of cytoplasmic filaments of animal cells so named originally because their diameter (nominally 10 nm) in muscle cells was intermediate between thick and thin filaments. Unlike microfilaments and microtubules, the protein sub units of intermediate filaments show considerable diversity and tissue specificity. ... See: cyto …

intermediate filament proteins
Filaments 7-11 nm in diameter found in the cytoplasm of all cells. Many specific proteins belong to this group, e.g., desmin, vimentin, prekeratin, decamin, skeletin, neurofilin, neurofilament protein, and glial fibrillary acid protein. ... (12 Dec 1998) ...

intermediate filaments
Cytoplasmic filaments intermediate in diameter (about 10 nanometers) between the microfilaments and the microtubules. They may be composed of any of a number of different proteins and form a ring around the cell nucleus. ... (12 Dec 1998) ...

intermediate ganglia
Small sympathetic ganglia most commonly found on the communicating branches in the cervical and lumbar region. ... Synonym: ganglia intermedia. ... (05 Mar 2000) ...

intermediate great muscle
Synonym for vastus intermedius ... <anatomy, muscle> Origin, upper three-fourths of anterior surface of shaft of femur; insertion, tibial tuberosity by way of common tendon of quadriceps femoris and patellar ligament; action, extends leg; nerve supply, femoral. ... Synonym: musculus vastus intermedius, crureus, femoral muscle, intermediate grea …

intermediate haemorrhage
Haemorrhage that is recurrent. ... (05 Mar 2000) ...

intermediate heart
Loosely, description of the heart's electrical axis when this is directed at approximately between +30° and +60°. For cardiac position, recognised in the electrocardiogram when the QRS complexes in both lead aVL and aVF resemble that in V6. ... (05 Mar 2000) ...

intermediate host
<epidemiology> See vector. ... (05 Dec 1998) ...

intermediate hypothalamic region
The infundibular portion of the hypothalamus, includes the medial tuberal nuclei and portions of the dorsomedial, ventromedial, arcuate (infundibular), posterior and lateral hypothalamic nuclei; located internally in the general area of the infundibulum. ... (05 Mar 2000) ...

intermediate image plane
<microscopy> In a light microscope, the plane into which the objective lens directly focuses the image of the specimen. The plane is usually located a set distance (commonly 10 mm) below the shoulder for the ocular and another fixed distance (generally 160 mm) behind the rear focal plane of the objective lens. The ocular forms a virtual image …

intermediate junction
Synonym for zonula adherens ... <cell biology> Specialised intercellular junction in which the membranes are separated by 15-25nm and into which are inserted microfilaments. Similar in structure to two apposed focal adhesions, though this may be misleading. Microfilaments inserted into the zonula adherens may interact (via myosin) with other m …

intermediate lacunar lymph node
A lymph node of the external iliac group located between the external iliac artery and vein at the vascular lacuna. ... Synonym: nodus lacunaris intermedius, intermediate lacunar node. ... (05 Mar 2000) ...

intermediate lacunar node
Synonym for intermediate lacunar lymph node ... A lymph node of the external iliac group located between the external iliac artery and vein at the vascular lacuna. ... Synonym: nodus lacunaris intermedius, intermediate lacunar node. ... (05 Mar 2000) ...

intermediate lamella
Synonym for interstitial lamella ... One of the lamellae of partially resorbed osteons occurring between newer, complete osteons. ... Synonym: ground lamella, intermediary system, intermediate lamella. ... (05 Mar 2000) ...

intermediate laryngeal cavity
Portion of the cavity of the larynx between the vestibular and vocal folds, with which the ventricles communicate. ... Synonym: aditus glottidis superior. ... (05 Mar 2000) ...

intermediate layer
Synonym for mantle layer ... The nuclear zone of the developing neural tube between the marginal layer and the ependymal layer; forms the gray matter of the central nervous system. ... Synonym: intermediate layer, mantle zone. ... (05 Mar 2000) ...

intermediate line of iliac crest
The line on the crest of the ilium between the outer and inner lips, for origin of internal oblique muscle. ... Synonym: linea intermedia cristae iliacae. ... (05 Mar 2000) ...

intermediate lumbar lymph nodes
The chain of lymph nodes located between the aorta and the inferior vena cava. ... Synonym: nodi lymphatici lumbales intermedii, lumbar lymph nodes. ... (05 Mar 2000) ...

intermediate mass
Synonym for interthalamic adhesion ... The variable connection between the two thalamic masses across the third ventricle; absent in about 20% of human brains. ... Synonym: adhesio interthalamica, commissura cinerea, commissura grisea, intermediate mass, massa intermedia. ... (05 Mar 2000) ...

intermediate mesoderm
A continuous band of mesoderm between the segmented paraxial mesoderm medially and the lateral plate mesoderm laterally; from it develops the nephrogenic cord. ... (05 Mar 2000) ...

intermediate part
Central portion; the portion located between extreme portions of a structure; an interposed or intervening part. ... See: intermediate part of adenohypophysis, intermediate part of vestibular bulb. ... Synonym: pars intermedia. ... (05 Mar 2000) ...

intermediate rays
Those between ultraviolet and X-ray's. ... Synonym: W rays. ... (05 Mar 2000) ...

intermediate sacral crests
Crests formed by the fusion of articular processes of all the sacral vertebrae. ... Synonym: articular crests, cristae sacrales intermediae. ... (05 Mar 2000) ...

intermediate supraclavicular nerve
<anatomy, nerve> One of several nerves arising from the C-3-C-4 part of the cervical plexus which run across the top of the shoulder and pass down across the clavicle to supply the skin of the top of the shoulder and in the infraclavicular region. ... Synonym: nervus supraclavicularis intermedius, middle supraclavicular nerve. ... (05 Mar 2000) …

intermediate temporal artery
<anatomy, artery> A branch of the insular part of the middle cerebral artery supplying the cortex of the temporal lobe between the anterior and posterior temporal arteries. ... Synonym: arteria temporalis intermedia. ... (05 Mar 2000) ...

intermediate trait
A measurable trait in which there is some evidence of the operation of a simple major cause, but in which the variation within the putative categories is such as to cause overlap and hence ambiguity in classification of any particular reading. ... (05 Mar 2000) ...

intermediate uveitis
A uveitis that is neither anterior nor posterior but tends to involve the pars plana and the ciliary body. ... (05 Mar 2000) ...

intermediate variable
A variable in a causal pathway that causes variation in the dependent variable and is itself caused to vary by the independent variable. ... (05 Mar 2000) ...

intermediate vastus muscle
Synonym for vastus intermedius ... <anatomy, muscle> Origin, upper three-fourths of anterior surface of shaft of femur; insertion, tibial tuberosity by way of common tendon of quadriceps femoris and patellar ligament; action, extends leg; nerve supply, femoral. ... Synonym: musculus vastus intermedius, crureus, femoral muscle, intermediate grea …

intermediate vein of forearm
Synonym for median antebrachial vein ... It begins at the base of the dorsum of the thumb, curves around the radial side, ascends the middle of the forearm, and just below the bend of the elbow divides into the intermediate basilic and intermediate cephalic veins; sometimes it divides lower down, one branch going to the basilic vein, the other to th …

intermedin
Synonym for melanotropin ... A polypeptide hormone secreted by the intermediate lobe of the hypophysis in humans (in neurohypophysis in certain other species) which causes dispersion of melanin by melanophores, resulting in darkening of the skin, presumably by promoting melanin synthesis; this effect is readily demonstated in some lower vertebrates, …

intermediolateral
Intermediate, and to one side, not central. Used especially to denote the intermediolateral cell column of spinal cord gray mattter, abbreviated IML, the location of all presynaptic sympathetic nerve cell bodies. ... (05 Mar 2000) ...

intermediolateral nucleus
The cell column that forms the lateral horn of the spinal cord's gray matter. Extending from the first thoracic through the second lumbar segment, the column contains the autonomic motor neurons that give rise to the preganglionic fibres of the sympathetic system. ... Synonym: intermediolateral cell column of spinal cord, nucleus intermediolateralis …

intermediomedial nucleus
A small group of scattered visceral motor neurons immediately ventral to the thoracic nucleus in the thoracic and upper two lumbar segments of the spinal cord; considered to receive visceral afferent fibres at all spinal levels. ... Synonym: nucleus intermediomedialis. ... (05 Mar 2000) ...

intermedium
Origin: NL, neut. Of L. Intermedius intermediate. ... 1. Intermediate space. ... 2. An intervening agent or instrument. ... 3. <anatomy> The bone or cartilage between the radiale and ulnare in the carpus, and between the tibiale and fibulare in the tarsus. It corresponds to the lunar in the carpus, and to a part of the astragalus in the tarsus o …

intermedius
Synonym: intermediate. ... Origin: L. ... (05 Mar 2000) ...

intermembrane space
<cell biology> Region between the two membranes of mitochondria and chloroplasts. On the endosymbiont hypothesis, this space would represent the original phagosome. ... (18 Nov 1997) ...

intermeningeal
Between the meninges. ... (05 Mar 2000) ...

intermenstrual
Between two consecutive menstrual periods. ... (05 Mar 2000) ...

intermenstrual pain
Pelvic discomfort occurring approximately at the time of ovulation, usually at the midpoint of the menstrual cycle. ... Synonym: midpain. ... Synonym: mittelschmerz. ... (05 Mar 2000) ...

intermesenteric plexus
The part of the aortic plexus lying between the superior and inferior mesenteric plexus's. ... Synonym: plexus intermesentericus. ... (05 Mar 2000) ...

intermetacarpal joints
The synovial joints between the bases of the second, third, fourth, and fifth metacarpal bones. ... Synonym: articulationes intermetacarpeae. ... (05 Mar 2000) ...

intermetameric
Between two metameres; denoting especially the intervertebral disks. ... (05 Mar 2000) ...

intermetatarsal articulations
Synonym for intermetatarsal joints ... The synovial joints between the bases of the five metatarsal bones. ... Synonym: articulationes intermetatarseae, intermetatarsal articulations. ... (05 Mar 2000) ...

intermetatarsal joints
The synovial joints between the bases of the five metatarsal bones. ... Synonym: articulationes intermetatarseae, intermetatarsal articulations. ... (05 Mar 2000) ...

intermetatarseum
Synonym for os intermetatarseum ... A supernumerary bone at the base of the first metatarsal, or between the first and second metatarsal bones, usually fused with one or the other or with the medial cuneiform bone. ... Synonym: intermetatarseum. ... (05 Mar 2000) ...

intermission
1. The act or the state of intermitting; the state of being neglected or disused; disuse; discontinuance. ... 2. Cessation for a time; an intervening period of time; an interval; a temporary pause; as, to labour without intermission; an intermission of ten minutes. 'Rest or intermission none I find.' (Milton) ... 3. <medicine> The temporary ces …

intermit
To cease for a time. ... (05 Mar 2000) ...

intermittence
1. A condition marked by intermissions or interruptions in the course of a disease or other process or state or in any continued action; denoting especially a loss of one or more pulse beats. ... 2. Complete cessation of symptoms between two periods of activity of a disease. ... (05 Mar 2000) ...

intermittent
Occurring at separated intervals, having periods of cessation of activity. ... (18 Nov 1997) ...

intermittent acute porphyria
Synonym for acute intermittent porphyria ... <gastroenterology, haematology> A group of rare inherited metabolic disorders that result from a disturbance in porphyrin metabolism, causing increased formation and excretion of porphyrin or its precursors. ... It is caused by hepatic overproduction of d-aminolevulinic acid, which has greatly increa …

intermittent albuminuria
<nephrology> Functional albuminuria occurring at intervals, such as cyclic albuminuria or albuminuria of athletes. ... (05 Mar 2000) ...

intermittent arthralgia
Synonym for periodic arthralgia ... A condition in which pain and swelling of one or more joints, most commonly the knee, occurs at regular intervals; there is sometimes abdominal pain, purpura, or oedema. ... Synonym: intermittent arthralgia. ... (05 Mar 2000) ...

intermittent claudication
<symptom> A symptom complex characterised by leg pain and weakness brought on by walking, with the disappearance of the symptoms following a brief rest. ... (12 Dec 1998) ...

intermittent cramp
Synonym for tetany ... 1. Hyperexcitability of nerves and muscles due to decrease in concentration of extracellular ionised calcium, which may be associated with such conditions as parathyroid hypofunction, vitamin D deficiency and alkalosis or result from ingestion of alkaline salts, it is characterised by carpopedal spasm, muscular twitching and c …

intermittent explosive disorder
<psychology> An uncommon disorder that begins in early childhood, characterised by repeated acts of violent, aggressive behaviour in otherwise normal persons that is markedly out of proportion to the event that provokes it. ... Synonym: dyscontrol, episodic dyscontrol syndrome. ... (05 Mar 2000) ...

intermittent haemoglobinuria
<nephrology> Recurrent episodic attacks of haemoglobinuria characteristic of paroxysmal nocturnal haemoglobinuria or paroxysmal cold haemoglobinuria. ... (05 Mar 2000) ...

intermittent malarial fever
See: intermittent malaria. ... (05 Mar 2000) ...

intermittent mandatory ventilation
Mechanical application of positive pressure at a predetermined frequency to the airway to increase tidal volume. ... (05 Mar 2000) ...

intermittent pulse
Irregularity of the heart due to extrasystoles which are too weak to open the semilunar valves; often owing to the long pause following the premature beat, extra long pauses equal to two regular cycles occur from time to time between pulse beats. ... Synonym: pulsus intercidens. ... (05 Mar 2000) ...

intermittent sterilization
Synonym for fractional sterilization ... Exposure to a temperature of 100°C (flowing steam) for a definite period, usually an hour, on each of several days; at each heating the developed bacteria are destroyed; spores, which are unaffected, germinate during the intervening periods and are subsequently destroyed. ... Synonym: discontinuous sterilizati …

intermittent tetanus
Synonym for tetany ... 1. Hyperexcitability of nerves and muscles due to decrease in concentration of extracellular ionised calcium, which may be associated with such conditions as parathyroid hypofunction, vitamin D deficiency and alkalosis or result from ingestion of alkaline salts, it is characterised by carpopedal spasm, muscular twitching and c …

intermittent torticollis
Synonym for torticollis spastica ... Stiff neck due to spasm of the neck muscles. ... Synonym: intermittent torticollis. ... (05 Mar 2000) ...

intermuscular gluteal bursa
Synonym for gluteofemoral bursa ... <anatomy> Two or three small bursae between the tendon of the gluteus maximus and the linea aspera. ... Synonym: bursa intermuscularis musculorum gluteorum, intermuscular gluteal bursa. ... (05 Mar 2000) ...

intermuscular septum
<anatomy> A term applied to aponeurotic sheets separating various muscles of the limbs; these are anterior and posterior crural, lateral and medial femoral, lateral and medial humeral. ... Synonym: septum intermusculare. ... (05 Mar 2000) ...

internal
<anatomy> Situated or occurring within or on the inside, many anatomical structures formerly called internal are now correctly termed medial. ... Origin: L. Internus ... (18 Nov 1997) ...

internal acoustic foramen
Synonym for opening of internal acoustic meatus ... The inner opening of the internal acoustic meatus on the posterior surface of the petrous part of the temporal bone. ... Synonym: porus acusticus internus, internal acoustic foramen, internal acoustic pore, auditory pore, internal auditory foramen, orifice of internal acoustic meatus. ... (05 Mar 200 …

internal acoustic pore
Synonym for opening of internal acoustic meatus ... The inner opening of the internal acoustic meatus on the posterior surface of the petrous part of the temporal bone. ... Synonym: porus acusticus internus, internal acoustic foramen, internal acoustic pore, auditory pore, internal auditory foramen, orifice of internal acoustic meatus. ... (05 Mar 200 …

internal adhesive pericarditis
Synonym for concretio cordis ... Extensive adhesion between parietal and visceral layers of the pericardium with partial or complete obliteration of the pericardial cavity. ... Synonym: internal adhesive pericarditis, synechia pericardii. ... (05 Mar 2000) ...

internal anal sphincter
<anatomy> A smooth muscle ring, formed by an increase of the circular fibres of the rectum, situated at the upper end of the anal canal, internal to the outer voluntary external anal sphincter. ... This sphincter is maximally-contracted when the rectal ampulla is at rest -empty or relaxed to accommodate a distending faecal mass. It is inhibite …

internal arcuate fibres
<anatomy> Fibres that arise in the cuneate and gracile nuclei, pass in a curving course across the midline of the medulla oblongata, and form the contralateral medial lemniscus. ... It also designates other fibres such as those of the olivocerebellar tract that arch through the substance of the medulla and form sensory decussation. ... Synonym: …

internal attachment
Synonym for precision attachment ... A frictional or mechanically retained unit used in fixed or removable prosthodontics, consisting of closely fitting male and female parts, an attachment that may be rigid in function or may incorporate a movable stress control unit to reduce the torque on the abutment. ... Synonym: frictional attachment, internal …

internal auditory artery
Synonym for labyrinthine artery ... <anatomy, artery> Internal acoustic meatal branch. A branch of the basilar artery that enters the labyrinth through the internal acoustic meatus. ... Synonym: arteria labyrinthi, ramus meatus acustici interni, arteria auditiva interna, artery of labyrinth, internal auditory artery. ... (05 Mar 2000) ...

internal auditory canal
<anatomy> Abnormal if difference in diameter greater than 2 mm, schematic: 7 8-sv anterior posterior 8-c 8-iv, 7 facial nerve (VII), 8-c cochlear division of VIII, 8-sv superior vestibular division, 8-iv inferior vestibular division ... (12 Dec 1998) ...

internal auditory foramen
Synonym for opening of internal acoustic meatus ... The inner opening of the internal acoustic meatus on the posterior surface of the petrous part of the temporal bone. ... Synonym: porus acusticus internus, internal acoustic foramen, internal acoustic pore, auditory pore, internal auditory foramen, orifice of internal acoustic meatus. ... (05 Mar 200 …

internal auditory meatus
internal acoustic meatus ...

internal auditory veins
Synonym for labyrinthine veins ... One or more veins accompanying the labyrinthine artery; they drain the internal ear, pass out through the internal acoustic meatus, and empty into the transverse sinus or the inferior petrosal sinus. ... Synonym: venae labyrinthi, internal auditory veins. ... (05 Mar 2000) ...

internal axis of eye
<anatomy> That part of the optic axis from the midpoint of the posterior surface of the cornea to the anterior surface of the retina opposite the posterior pole. ... Synonym: axis bulbi internus. ... (05 Mar 2000) ...

internal base of skull
<anatomy> The interior aspect of the skull base on which the brain rests; the floor of the cranial cavity. ... See: base of skull. ... Synonym: basis cranii interna. ... (05 Mar 2000) ...

internal bias
Applied to the motile behaviour of crawling cells that, in the short term, show persistence and do not behave as true random walkers. Any intrinsic regulation of the random motile behaviour of the cell could be considered as internal bias. ... (18 Nov 1997) ...

internal branch of accessory nerve
<anatomy, nerve> Branch of the accessory nerve trunk which carries fibres from the cranial root and which unites with the vagus nerve in the jugular foramen. ... See: accessory nerve. ... Synonym: ramus internus nervi accessorii, internal ramus of accessory nerve. ... (05 Mar 2000) ...

internal canthus
Synonym for medial angle of eye ... The angle formed by the union of the upper and lower eyelids medially. ... Synonym: angulus oculi medialis, angulus oculi nasalis, internal canthus, medial canthus. ... (05 Mar 2000) ...

internal capsule
<anatomy, neurology> A massive layer (8 to 10 mm thick) of white matter separating the caudate nucleus and thalamus (medial) from the more laterally situated lentiform nucleus (globus pallidus and putamen). It consists of 1) fibres ascending from the thalamus to the cerebral cortex that compose, among others, the visual, auditory, and somatic …

internal capsule syndrome
<syndrome> Hemianopsia with contralateral hemianesthesia of the face. ... (05 Mar 2000) ...

internal carotid (nervous) plexus
An autonomic plexus surrounding the internal carotid artery in the carotid canal and cavernous sinus, and sending branches to the tympanic plexus, sphenopalatine ganglion, abducens and oculomotor nerves, the cerebral vessels, and the ciliary ganglion. ... Synonym: internal carotid venous plexus. ... (05 Mar 2000) ...

internal carotid artery
<anatomy, artery> Arises from the common carotid opposite upper border of thyroid cartilage (C-4 vertebral level) and terminates in the middle cranial fossa by dividing into the anterior and middle cerebral arteries; for descriptive purposes it is divided into four parts: cervical, petrous, cavernous, and cerebral. ... Synonym: arteria carotis …

internal carotid nerve
<anatomy, nerve> The cephalic arterial ramus conveying postsynaptic sympathetic fibres from the superior cervical ganglion to the internal carotid artery to form the internal carotid plexus. ... Synonym: nervus caroticus internus. ... (05 Mar 2000) ...

internal carotid venous plexus
A venous network around the internal carotid artery in the carotid canal of the temporal bone, connecting with the cavernous sinus and internal jugular vein. ... Synonym: plexus venosus caroticus internus, internal carotid (nervous) plexus, plexus caroticus internus. ... (05 Mar 2000) ...

internal cephalic version
Version performed by means of one hand within the vagina. ... See: cephalic version. ... (05 Mar 2000) ...

internal cerebral veins
Paired veins passing caudally near the midline in the tela choroidea of the third ventricle, formed by the union of the choroid vein, thalamostriate (terminal) vein, and vein of septum pellucidum, and uniting caudally so as to form the great cerebral vein. ... Synonym: venae cerebri internae, veins of Galen. ... (05 Mar 2000) ...

internal conjugate
Synonym for conjugate of pelvic inlet ... Distance from the promontory of the sacrum to the upper posterior edge of the pubic symphysis. ... Synonym: anteroposterior diameter of the pelvic inlet, conjugata vera, conjugate axis, conjugate diameter of pelvic inlet, diameter mediana, internal conjugate, true conjugate. ... (05 Mar 2000) ...

internal conversion electron
An electron, similar to an Auger electron, released from one of the electron orbits of the atom upon activation by a gamma-ray from that atom's nucleus; the electron has kinetic energy equal to the net energy transition of the disintegration. ... (05 Mar 2000) ...

internal decompression
Removal of intracranial tissue, usually tumour or brain tissue. To relieve pressure. ... (05 Mar 2000) ...

internal ear
Synonym for auris interna ... internal ear ...