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

late diastolic murmur
Synonym for presystolic murmur ... A murmur heard at the end of ventricular diastole (during atrial systole if in sinus rhythm), usually due to obstruction at one of the atrioventricular orifices. ... Synonym: atriosystolic murmur, late diastolic murmur. ... (05 Mar 2000) ...

late effect
Side effects of chemotherapy and/or radiotherapy which only become apparent with long-term monitoring of the patient over a period of years. These are of particular concern in patients below the age of puberty. ... (18 Nov 1997) ...

late gene
<genetics, molecular biology> Gene expressed relatively late after infection of a host cell by a virus, usually structural proteins for the viral coat. ... (18 Nov 1997) ...

late latent syphilis
Usually infectious in pregnant women only, who may pass the infection on to the foetus. ... (05 Mar 2000) ...

late reaction
Synonym for delayed reaction ... A local or generalised response that begins 24 to 48 hours after exposure to an antigen. ... See: cell-mediated reaction. ... Synonym: contact hypersensitivity, delayed hypersensitivity, late reaction, tuberculin-type hypersensitivity. ... (05 Mar 2000) ...

late replicating chromosome
A chromosome (often anomalous) that is shown, e.g., by incorporation of a labelled nucleotide, to undergo delayed duplication preliminary to mitosis; formerly used as a means of distinguishing members of a group of chromosome's. ... (05 Mar 2000) ...

late rickets
Synonym for osteomalacia ... <pathology> A condition marked by softening of the bones (due to impaired mineralisation, with excess accumulation of osteoid), with pain, tenderness, muscular weakness, anorexia and loss of weight, resulting from deficiency of vitamin D and calcium. ... Origin: Gr. Malakia = softness ... (18 Nov 1997) ...

late seizure
A seizure that occurs greater than one week after a craniocerebral trauma or CNS insult. ... (05 Mar 2000) ...

late seral species
Shade tolerant species, primarily vine maple shrubs and western red cedar and western hemlock trees. These species follow the mid seral species in natural succession. ... (05 Dec 1998) ...

late seral treatment
A treatment in which late seral species will be established after thinning. ... (05 Dec 1998) ...

late syphilis
Involvement of the cardiovascular or central nervous system, or the development of a gumma in any organ, due to infection with Treponema pallidum; usually several years to 2-3 decades after the initial infection. ... Synonym: tertiary syphilis. ... (05 Mar 2000) ...

late systole
Synonym for prediastole ... The interval in the cardiac rhythm immediately preceding diastole. ... Synonym: late systole. ... (05 Mar 2000) ...

late-phase response
Recurrence of symptoms after an appreciable interval following challenge with an antigen; preceded by an initial early-phase response. ... (05 Mar 2000) ...

late-successional forest
Forest seral stages which include mature and old- growth age classes. ... (05 Dec 1998) ...

late-successional reserve
An area of forest where the management objective is to protect and enhance conditions of late successional and old-growth forest ecosystems. ... (05 Dec 1998) ...

latebra
A flask-shaped region in large-yolked eggs extending from the animal pole to a dilated terminal portion near the centre of the yolk; it contains the main bulk of the white yolk. ... Origin: L. Hiding place ... (05 Mar 2000) ...

latency
1. <physiology> The time between onset of a stimulus and peak of the ensuing action potential. ... 2. <microbiology> Of an infection, a period in which the infection is present in the host without producing overt symptoms. ... (18 Nov 1997) ...

latency period
<psychology> The period from about 5 to 7 years to adolescence when there is an apparent cessation of psychosexual development. ... (12 Dec 1998) ...

latency phase
In psychoanalytic personality theory, the period of psychosexual development in children, extending from about age 5 to the beginning of adolescence at age 12, during which the apparent cessation of sexual preoccupation during this period stems from a strong, aggressive blockade of libidinal and sexual impulses in an effort to avoid oedipal relatio …

latent
Dormant. A state that some cancer cells might assume. (Opp: growing or active). ... (16 Dec 1997) ...

latent adrenocortical insufficiency
Adrenocortical insufficiency not clinically evident but which can become severe if a sudden stress, such as an intercurrent acute illness, develops. ... (05 Mar 2000) ...

latent allergy
Allergy that causes no signs or symptoms but can be revealed by means of certain immunologic tests with specific allergens. ... (05 Mar 2000) ...

latent carcinoma
<tumour> An epithelial neoplasm showing microscopic features of malignancy believed to have remained localised and asymptomatic for a long period; e.g., small carcinoma's of the prostate in old men, often found incidentally at autopsy. ... (05 Mar 2000) ...

latent carrier
A person, typically a prospective parent, bearing the appropriate genotype of a trait (homozygous for recessive, homozygous or heterozygous for dominant, hemizygous or homozygous for X-linked) that manifests the trait only under certain conditions, e.g., age, an environmental insult, etc. ... (05 Mar 2000) ...

latent coccidioidomycosis
A form of coccidioidomycosis not differentiated clinically from upper respiratory infections of viral or bacterial aetiology; positive skin tests are useful in demonstrating past and present infections; tests for circulating serum antibodies are prognostic as well as diagnostic in some cases. ... Synonym: asymptomatic coccidioidomycosis. ... (05 Mar …

latent content
The hidden, unconscious meaning of thoughts or actions, especially in dreams or fantasies. ... (05 Mar 2000) ...

latent diabetes
A mild form of diabetes mellitus in which the patient displays no overt symptoms, but displays certain abnormal responses to diagnostic procedures, such as an elevated fasting blood glucose concentration or reduced glucose tolerance. ... Synonym: chemical diabetes. ... (05 Mar 2000) ...

latent energy
Synonym for potential energy ... <chemistry> Energy due to position, it is stored energy which can be used to do work. ... (09 Jan 1998) ...

latent heat
The amount of heat that a substance may absorb without an increase in temperature, as in conversion from solid to liquid state (ice to water at 0°C), or from liquid to gaseous state (water to steam at 100°C). ... Compare: sensible heat. ... (05 Mar 2000) ...

latent homosexuality
An erotic inclination toward members of the same sex not consciously experienced or expressed in overt action, as opposed to overt homosexuality Use of this term is disappearing because of both its potentially iatrogenic effect and the inability to validate the phenomenon by techniques outside of psychoanalytic theory. ... Synonym: unconscious homos …

latent hyperopia
The difference between total and manifest hyperopia. ... (05 Mar 2000) ...

latent infection
An asymptomatic infection capable of manifesting symptoms under particular circumstances or if activated. ... (05 Mar 2000) ...

latent learning
That learning which is not evident to the observer at the time it occurs, but which is inferred from later performance in which learning is more rapid than would be expected without the earlier experience. ... (05 Mar 2000) ...

latent microbism
The presence of pathogenic microorganisms in the body that elicit no symptoms; the condition of a pathogen carrier. ... (05 Mar 2000) ...

latent nystagmus
Jerky nystagmus that is brought out by covering one eye. The fast phase is always away from the covered eye. ... (05 Mar 2000) ...

latent period
A seemingly inactive period, as that between exposure of tissue to an injurious agent and the manifestation of response or that between the instant of stimulation and the beginning of response. ... (18 Nov 1997) ...

latent rat virus
Synonym for Kilham rat virus ... A virus of the genus Parvovirus causing inapparent infection in rats; also recoverable from rat tumours. ... Synonym: latent rat virus. ... (05 Mar 2000) ...

latent reflex
A reflex which must be considered normal but which usually appears only under some pathologic circumstance that lowers its threshold. ... (05 Mar 2000) ...

latent schizophrenia
A preexisting susceptibility for developing overt schizophrenia under strong emotional stress. ... (05 Mar 2000) ...

latent stage
Synonym for incubative stage ... incubation period ...

latent syphilis
Infection with Treponema pallidum, after the manifestations of primary and secondary syphilis have subsided (or were never noticed), before any manifestations of tertiary syphilis have appeared. ... (05 Mar 2000) ...

latent tetany
A rather vague disorder recognised more in Europe than in the U.S. Consisting of a number of non-specific complaints, including generalised weakness, hand and foot cramping, distal paresthesia, anxiety, and depression. Some think it is a 'normocalcaemic tetany'; others consider it 'chronic hyperventilation syndrome.' Typically with certain provokin …

latent typhoid
walking typhoid ...

latent virus
<virology> Virus integrated within host genome but inactive: may be reactivated by stress such as ultraviolet irradiation. ... (18 Nov 1997) ...

latent zone
That portion of the cerebral cortex, the stimulation of which produces no movement and a lesion of which produces no symptoms; mainly the more anterior areas of the frontal lobes. ... (05 Mar 2000) ...

lateral
1. <anatomy> Denoting a position farther from the median plane or midline of the body or of a structure. ... 2. Pertaining to a side. ... Origin: L. Lateralis ... (18 Nov 1997) ...

lateral aberrant thyroid carcinoma
<tumour> A cervical nodule of thyroid carcinoma situated outside the thyroid gland, formerly thought to arise from ectopic thyroid tissue but now believed to be metastatic from an occult carcinoma within the gland. ... (05 Mar 2000) ...

lateral aberration
In spherical aberration, the distance between paraxial focus of central rays on the optic axis. ... (05 Mar 2000) ...

lateral alveolar abscess
An alveolar abscess located along the lateral root surface of a tooth. ... Synonym: pericemental abscess. ... (05 Mar 2000) ...

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

lateral angle of eye
The angle formed by the junction of the lateral parts of the upper and lower eyelids. ... Synonym: angulus oculi lateralis, angulus oculi temporalis, external canthus, lateral canthus. ... (05 Mar 2000) ...

lateral angle of scapula
The blunt, concave head of the scapula forming the glenoid cavity at the junction of the superior and lateral borders of the bone. ... Synonym: angulus lateralis scapulae. ... (05 Mar 2000) ...

lateral angle of uterus
The upper part of the side of the uterus at the point of its junction with the uterine tube. ... (05 Mar 2000) ...

lateral anterior thoracic nerve
Synonym for lateral pectoral nerve ... <anatomy, nerve> A nerve that arises from the lateral cord of the brachial plexus usually passing medial to pectoralis minor to supply the sternoclavicular head of pectoralis major. ... Synonym: nervus pectoralis lateralis, lateral anterior thoracic nerve. ... (05 Mar 2000) ...

lateral arcuate ligament
<anatomy> One of Haller's arches; a thickening of the fascia of the quadratus lumborum muscle between the transverse process of the first lumbar vertebra and the twelfth rib on either side that gives attachment to a portion of the diaphragm. ... Synonym: ligamentum arcuatum laterale, arcus lumbocostalis lateralis, lateral lumbocostal arch. ... …

lateral atlantoaxial joint
A condylar synovial joint between the inferior articular facets of the atlas and the superior articular facets of the axis. ... Synonym: articulatio atlantoaxialis lateralis, lateral atlantoepistrophic joint. ... (05 Mar 2000) ...

lateral atlantoepistrophic joint
Synonym for lateral atlantoaxial joint ... A condylar synovial joint between the inferior articular facets of the atlas and the superior articular facets of the axis. ... Synonym: articulatio atlantoaxialis lateralis, lateral atlantoepistrophic joint. ... (05 Mar 2000) ...

lateral atrial vein
Synonym for vena atrii lateralis ... A vein draining deep portions of the temporal and parietal lobes; it runs in the lateral wall of the lateral ventricle to terminate in the superior thalamostriate vein. ... Synonym: vena ventriculi lateralis lateralis, lateral atrial vein, lateral vein of lateral ventricle. ... (05 Mar 2000) ...

lateral basal branch
Lateral basal branch of the following: 1) basal part of inferior lobar branch of right pulmonary artery; 2) basal part of inferior lobar branch of left pulmonary artery. ... Synonym: ramus basalis lateralis. ... (05 Mar 2000) ...

lateral basal segment
Lateral basal segment of inferior lobe of right and left lung; between anterior and posterior basal segments. ... Synonym: segmentum basale laterale. ... (05 Mar 2000) ...

lateral bicipital groove
at the cubital fossa, the groove separating the biceps brachii and brachialis muscles on the lateral side. ... Synonym: sulcus bicipitalis lateralis. ... (05 Mar 2000) ...

lateral border
The margin or edge of a structure which is farthest from the midline. ... Synonym: margo lateralis, lateral margin. ... (05 Mar 2000) ...

lateral border of foot
The border of the foot between the small toe and the heel. ... Synonym: margo lateralis pedis, margo fibularis pedis, fibular margin of foot. ... (05 Mar 2000) ...

lateral border of forearm
An imaginary line running along the outermost extent of the forearm separating anterior and posterior surfaces laterally. ... Synonym: margo lateralis antebrachii, margo radialis antebrachii, radial border of forearm. ... (05 Mar 2000) ...

lateral border of humerus
The ridge on the humerus that extends from the greater tubercle to the lateral epicondyle. ... Synonym: margo lateralis humerii. ... (05 Mar 2000) ...

lateral border of kidney
The convex narrow edge separating the anterior and posterior surfaces. ... Synonym: margo lateralis renis. ... (05 Mar 2000) ...

lateral border of nail
The sides of the nail extending from the proximal to the free borders. ... Synonym: margo lateralis unguis. ... (05 Mar 2000) ...

lateral border of scapula
The edge of the scapula extending from the glenoid fossa to the inferior angle. ... Synonym: margo lateralis scapulae. ... (05 Mar 2000) ...

lateral branches
Branches directed away from the midline, to the side. Nomina Anatomica lists lateral branches (ramus lasteralis/rami laterales) of the following: 1) anterior interventricular artery, ramus lateralis interventricularis anterioris arteriae coronariae sinistrae; 2) anterolateral central arteries, rami laterales arteriarum centralium anterolateralium; …

lateral canal
Synonym for accessory canal ... A channel leading from the root pulp laterally through the dentin to the periodontal tissue; may be found anywhere in the tooth root, but is more common in the apical third of the root. ... Synonym: lateral canal. ... (05 Mar 2000) ...

lateral canthus
Synonym for lateral angle of eye ... The angle formed by the junction of the lateral parts of the upper and lower eyelids. ... Synonym: angulus oculi lateralis, angulus oculi temporalis, external canthus, lateral canthus. ... (05 Mar 2000) ...

lateral cartilage
Cartilaginous plates that extend above the hoof from the caudal angles of the distal phalanx of the horse; they are readily palpated under the skin of the sides of the hoof and assist in distributing the animal's weight during locomotion. ... (05 Mar 2000) ...

lateral cartilaginous layer
Synonym for lateral lamina of cartilaginous auditory tube ... The narrow lateral portion of the cartilaginous part of the auditory tube. ... Synonym: lamina lateralis cartilaginis tubae auditivae, lamina cartilaginis lateralis tubae auditivae, lateral cartilaginous layer, lateral layer of cartilaginous auditory tube. ... (05 Mar 2000) ...

lateral central palmar space
The more lateral (radial) of the central palmar spaces, bounded laterally by the thenar compartment; related distally to the synovial tendon sheath of the index finger and proximally to the common flexor sheath. ... Synonym: lateral midpalmar space. ... (05 Mar 2000) ...

lateral cerebral fissure
Synonym for lateral cerebral sulcus ... The deepest and most prominent of the cortical fissures, extending from the anterior perforated substance first laterally at the deep incisure between the frontal and temporal lobes, then back and slightly upward over the lateral aspect of the cerebral hemisphere, with the superior temporal gyrus as its lower …

lateral cerebral fossa
The deep depression of the basal surface of the forebrain that corresponds in position to the anterior perforated substance. Bounded medially by the optic tract and rostrally by the orbital surface of the frontal lobe, it extends laterally around the overhanging pole of the temporal lobe into the Sylvian fissure (sulcus lateralis). ... Synonym: foss …

lateral cerebral sulcus
The deepest and most prominent of the cortical fissures, extending from the anterior perforated substance first laterally at the deep incisure between the frontal and temporal lobes, then back and slightly upward over the lateral aspect of the cerebral hemisphere, with the superior temporal gyrus as its lower bank, the insula forming its greatly ex …

lateral circumflex artery of thigh
Synonym for lateral circumflex femoral artery ... <anatomy, artery> Origin, profunda femoris; distribution, hip joint, thigh muscles; anastomoses, medial circumflex femoral, inferior gluteal, superior gluteal. ... Synonym: arteria circumflexa femoris lateralis, lateral circumflex artery of thigh, lateral femoral circumflex artery. ... (05 Mar 20 …

lateral circumflex femoral artery
<anatomy, artery> Origin, profunda femoris; distribution, hip joint, thigh muscles; anastomoses, medial circumflex femoral, inferior gluteal, superior gluteal. ... Synonym: arteria circumflexa femoris lateralis, lateral circumflex artery of thigh, lateral femoral circumflex artery. ... (05 Mar 2000) ...

lateral circumflex femoral veins
The veins that accompany the lateral circumflex femoral artery, usually terminating in the femoral vein. ... Synonym: venae circumflexae femoris laterales. ... (05 Mar 2000) ...

lateral collateral
A strong ligament which connects the femur to the tibia, stabilising the outer aspect of the knee joint. ... (27 Sep 1997) ...

lateral column
A slight protrusion of the gray matter of the spinal cord into the lateral funiculus of either side, especially marked in the thoracic region where it encloses preganglionic motor neurons of the sympathetic division of the autonomic nervous system; it corresponds to the lateral horn appearing in transverse sections of the spinal cord. ... See: gray …

lateral column of spinal cord
Synonym for lateral column ... A slight protrusion of the gray matter of the spinal cord into the lateral funiculus of either side, especially marked in the thoracic region where it encloses preganglionic motor neurons of the sympathetic division of the autonomic nervous system; it corresponds to the lateral horn appearing in transverse sections of …

lateral condylar inclination
The direction of the lateral condyle path. ... (05 Mar 2000) ...

lateral condyle
Condyle farthest from the midline. ... Synonym: condylus lateralis. ... (05 Mar 2000) ...

lateral condyle of femur
The lateral condyle is longer than the medial condyle. ... Synonym: condylus lateralis femoris. ... (05 Mar 2000) ...

lateral condyle of tibia
The lateral condyle is longer than the medial condyle. ... Synonym: condylus lateralis tibiae. ... (05 Mar 2000) ...

lateral cord of brachial plexus
In the brachial plexus, the bundle of nerve fibres formed by the anterior divisions of the superior and middle trunks which is located lateral to the axillary artery. This cord gives off the lateral pectoral nerve and terminates by dividing into the musculocutaneous nerve and the lateral root of the median nerve. ... Synonym: fasciculus lateralis pl …

lateral corticospinal tract
Synonym for lateral pyramidal tract ... Those fibres of the pyramidal tract that cross to the opposite side in the pyramidal decussation and descend in the dorsal half of the lateral funiculus of the spinal cord; they are distributed throughout the length of the spinal cord to interneurons of the zona intermedia of the spinal gray matter. ... See: py …

lateral costotransverse ligament
<anatomy> The short quadrangular ligament, actually a thickening of the posterior aspect of the costotransverse joint, extending from the tip of the transverse process to the posterior surface of the neck of the rib. ... Synonym: ligamentum costotransversarium laterale, ligamentum costotransversarium posterius, ligamentum tuberculi costae, pos …

lateral cricoarytenoid
<anatomy, muscle> Origin, upper margin of arch of cricoid cartilage; insertion, muscular process of arytenoid; action, adducts vocal folds (narrows rima glottidis); nerve supply, recurrent laryngeal. ... Synonym: musculus cricoarytenoideus lateralis. ... (05 Mar 2000) ...

lateral crus
Limb or leg-like portion of a structure, farthest from midline. ... Synonym: crus laterale, lateral limb. ... (05 Mar 2000) ...

lateral crus of facial canal
Laterally-placed, posteriorly-directed second portion of the horizontal part of the facial canal. ... See: horizontal part of facial canal. ... Synonym: lateral crus of horizontal part of the facial canal. ... (05 Mar 2000) ...

lateral cuneate nucleus
Synonym for accessory cuneate nucleus ... A cell group lateral to the cuneate nucleus which receives posterior-root fibres corresponding to the proprioceptive innervation of the arm and hand; it projects to the cerebellum by way of the cuneocerebellar tract, and can be considered the upper-extremity equivalent of the thoracic nucleus. ... Synonym: nu …

lateral cuneiform bone
A bone of the distal row of the tarsus; it articulates with the intermediate cuneiform, cuboid, navicular, and second, third, and fourth metatarsal bones. ... Synonym: os cuneiforme laterale, third cuneiform bone, wedge bone. ... (05 Mar 2000) ...

lateral curvature
Curvature in which a more distal part is deviated away from the anatomic sagittal plane. ... (05 Mar 2000) ...

lateral cutaneous branch
Lateral cutaneous branches of the following: 1) iliohypogastric nerve, ramus cutaneus lateralis nervi iliohypogastrici; 2) dorsal branch of thoracic nerves, ramus lateralis ramorum dorsalium nervorum thoracicorum; 3) dorsal branch of posterior intercostal arteries, ramus cutaneos lateralis ramorum posteriorum arterieae intercostalium. ... Synonym: r …

lateral cutaneous nerve of calf
Synonym for lateral sural cutaneous nerve ... <anatomy, nerve> It arises from the common peroneal in the popliteal space and is distributed to the skin of the inferolateral surface of the calf. ... Synonym: nervus cutaneus surae lateralis, lateral cutaneous nerve of calf. ... (05 Mar 2000) ...

lateral cutaneous nerve of forearm
Synonym for lateral antebrachial cutaneous nerve ... <anatomy, nerve> The terminal cutaneous branch of the musculocutaneous nerve that emerges between bicips brachii and brachialis muscles to supply the skin of the radial side of the forearm. ... Synonym: nervus cutaneus antebrachii lateralis, lateral cutaneous nerve of forearm. ... (05 Mar 2000 …

lateral cutaneous nerve of thigh
Synonym for lateral femoral cutaneous nerve ... <anatomy, nerve> Arises from the second and third lumbar nerves, supplies the skin of the anterolateral and lateral surfaces of the thigh. ... Synonym: nervus cutaneus femoris lateralis, lateral cutaneous nerve of thigh. ... (05 Mar 2000) ...