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

Hering's theory of colour vision
That there are three opponent visual processes: blue-yellow, red-green, and white-black. ... (05 Mar 2000) ...

heriot
Formerly, a payment or tribute of arms or military accouterments, or the best beast, or chattel, due to the lord on the death of a tenant; in modern use, a customary tribute of goods or chattels to the lord of the fee, paid on the decease of a tenant. Heriot custom, a heriot depending on usage. Heriot service, a heriot due by reservation in a grant …

heritability
The degree to which something is inherited. ... (12 Dec 1998) ...

heritable
Capable of being transmitted from parent to child. ... (12 Dec 1998) ...

heritage
1. That which is inherited, or passes from heir to heir; inheritance. 'Part of my heritage, Which my dead father did bequeath to me.' (Shak) ... 2. A possession; the Israelites, as God's chosen people; also, a flock under pastoral charge. (Joel III. 2) (1 Peter v. 3) ... Origin: OE. Heritage, eritage, OF. Heritage, eritage, F. Heritage, fr. Heriter t …

Herlitz
Gillis, Swedish paediatrician, *1902. ... See: Herlitz syndrome. ... (05 Mar 2000) ...

Herlitz syndrome
Synonym for epidermolysis bullosa lethalis ... Epidermolysis bullosa in which the bullae are persistent, nonhealing, and often present in the oral mucosa and trachea, but not on the palms and soles, leading to death. ... Synonym: epidermolysis bullosa, junctional type, Herlitz syndrome. ... (05 Mar 2000) ...

Hermann, Friedrich
<person> German anatomist, 1859-1920. ... See: Hermann's fixative. ... (05 Mar 2000) ...

Hermann's fixative
<chemical> A hardening fixative of glacial acetic acid, osmic acid, and platinum chloride. ... (05 Mar 2000) ...

Hermansky-Pudlak syndrome
<syndrome> A form of oculocutaneous albinism (autosomal recessive) with accumulation of ceroid in lysosomes with restrictive lung disease, granulomatous colitis, kidney failure, cardiomyopathy, and storage pool-deficient platelets. ... (05 Mar 2000) ...

Hermansky-Pudlak syndrome type VI
Synonym for oculocutaneous albinism ... An autosomal recessive deficiency of pigment in skin, hair, and eyes; in the tyrosinase negative type, there is an absence of tyrosinase; in the tyrosinase positive type, there is normal tyrosinase which cannot enter pigment cells; it is transmitted by an autosomal recessive inheritance. The compound heterozyg …

Hermansky, F Hermansky
<person> 20th century Czech physician. ... See: Hermansky-Pudlak syndrome, Hermansky-Pudlak syndrome type VI. ... (05 Mar 2000) ...

hermaphrodite
<biology> An organism which has both male and female organs, and produces both male gametes (sperm) and female gametes (eggs). ... The organism can have both types of organs at the same time (simultaneous hermaphrodite) or have one type early in life and the other type later in life (sequential hermaphrodite). ... (09 Oct 1997) ...

hermaphroditic
<biology> Bearing both male and female organs together, for example on the same gametophyte or in the same flower. ... (09 Oct 1997) ...

hermes
Hermes Trismegistus [lit, Hermes thrice greatest] was a late name of Hermes, especially as identified with the Egyptian god Thoth. He was the fabled inventor of astrology and alchemy. ... Originally, a boundary stone dedicated to Hermes as the god of boundaries, and therefore bearing in some cases a head, or head and shoulders, placed upon a quadran …

hermetic
Impervious to air, airtight. ... Origin: L. Hermeticus ... (18 Nov 1997) ...

hermetical
1. Of, pertaining to, or taught by, Hermes Trismegistus; as, hermetic philosophy. Hence: Alchemical; chemic. 'Delusions of the hermetic art.' 'The alchemists, as the people were called who tried to make gold, considered themselves followers of Hermes, and often called themselves Hermetic philosophers.' (A. B. Buckley) ... 2. Of or pertaining to the …

hermit
1. A person who retires from society and lives in solitude; a recluse; an anchoret; especially, one who so lives from religious motives. ... 2. <zoology> Hermit crab, a California wood warbler (Dendroica occidentalis), having the head yellow, the throat black, and the back gray, with black streaks. ... Origin: OE. Ermite, eremite, heremit, here …

hernia
<anatomy> The protrusion of a loop or knuckle of an organ or tissue through an abnormal opening. ... (05 May 1997) ...

hernia en bissac
Synonym for properitoneal inguinal hernia ... A complicated hernia having a double sac, one part in the inguinal canal, the other projecting from the internal inguinal ring in the subperitoneal tissues. ... Synonym: hernia en bissac, Kronlein's hernia. ... (05 Mar 2000) ...

hernia knife
A slender bladed knife, with short cutting edge, for dividing the constricting tissues at the mouth of the hernial sac. ... Synonym: herniotome. ... (05 Mar 2000) ...

hernia repair
<surgery> The surgical repair of a hernia. This surgery can be done under local or general anaesthesia. May be performed using a conventional incision or using a fibreoptic laparoscope. ... (27 Sep 1997) ...

hernia uteri inguinale
Synonym for persistent mullerian duct syndrome ... <syndrome> Familial disorder with presence of fallopian tube, uterus, and testis in a male. Deficient mullerian inhibitory substance secondary to Sertoli cell defect. ... Synonym: hernia uteri inguinale. ... (05 Mar 2000) ...

hernia, diaphragmatic
Protrusion of some part of the abdominal or retroperitoneal structures through the diaphragm into the thorax. ... (12 Dec 1998) ...

hernia, diaphragmatic, traumatic
Protrusion of some part of the abdominal or retroperitoneal structures through the diaphragm into the thorax, occurring as a result of injury, usually to the abdomen. ... (12 Dec 1998) ...

hernia, hiatal
Herniation of the lower oesophagus and/or portion of the stomach through the oesophageal hiatus. ... (12 Dec 1998) ...

hernia, hiatus
Protrusion of the stomach up into the opening normally occupied by the oesophagus in the diaphragm, the muscle that separates the chest (thoracic) cavity from the abdomen. Hiatus in latin means an opening. ... (12 Dec 1998) ...

hernia, obturator
Hernia through the obturator foramen. ... (12 Dec 1998) ...

hernia, umbilical
The protrusion of part of the intestine at the umbilicus. ... (12 Dec 1998) ...

hernial
Relating to hernia. ... (05 Mar 2000) ...

hernial aneurysm
The protrusion of the stretched inner coats of an artery through a wound in the adventitia. ... (05 Mar 2000) ...

hernial sac
The peritoneal envelope of a hernia. ... (05 Mar 2000) ...

herniate
<anatomy, surgery> The abnormal protrusion herniation of an organ or part of an organ, through an aperture in the surrounding structures. This commonly occurs with the protrusion of an abdominal organ through a defect in the abdominal wall. ... Examples include inguinal hernia, femoral hernia and umbilical hernia. ... (27 Sep 1997) ...

herniated
Denoting any structure protruded through a hernial opening. ... (05 Mar 2000) ...

herniated disk
<orthopaedics> A condition that results in the abnormal protrusion (bulging), herniation or prolapse of a vertebral disc from its normal position in the vertebral column. The displaced disc may exert force on a nearby nerve root causing the typical neurologic symptoms of radiating pain (to an extremity), numbness, tingling and weakness. Recur …

herniated nucleus pulposus
<orthopaedics> A herniated intervertebral disk (nucleus pulposus) is one which has become displaced (prolapsed) from its normal position in between the vertebral bodies of the spine. ... Herniated disks often impinge on nearby nerve structures resulting in pain and neurologic symptoms. A clinical situation where the radicular nerve (nerve root …

herniation
<anatomy> Bulging of tissue through an opening in a membrane, muscle or bone. ... (16 Dec 1997) ...

herniation of nucleus pulposus
<radiology> Focal protrusion of disc material secondary to rupture of annulus fibrosus confined within the posterior longitudinal ligament location: L4/5 (35%); L5/S1 (27%); L3/4 (19%); L2/3 (14%); L1/2 (5%); thoracic spine affected in 3:1000 disc operations, posterolateral (49%): weakest point (posterior longitudinal ligament tightly adheren …

hernio-
A hernia. ... Origin: L. Hernia, rupture ... (05 Mar 2000) ...

hernioenterotomy
<procedure> Incision of the intestine following the reduction of a hernia. ... (05 Mar 2000) ...

herniography
Radiographic examination of a hernia following injection of a contrast medium into the hernial sac. ... Origin: hernia + G. Grapho, to write ... (05 Mar 2000) ...

hernioid
Resembling hernia. ... Origin: hernio-+ G. Eidos, resemblance ... (05 Mar 2000) ...

herniolaparotomy
<procedure> Laparotomy for correction of hernia. ... (05 Mar 2000) ...

hernioplasty
Synonym: herniorrhaphy. ... Origin: hernio-+ G. Plastos, formed ... (05 Mar 2000) ...

herniopuncture
Insertion of a hollow needle into a hernia in order to reduce the size of the tumour by withdrawing gas or liquid. ... (05 Mar 2000) ...

herniorrhaphy
<surgery> The surgical repair of a hernia. This surgery can be done under local or general anaesthesia. May be performed using a conventional incision or using a fibreoptic laparoscope. ... (27 Sep 1997) ...

herniotome
Synonym for hernia knife ... A slender bladed knife, with short cutting edge, for dividing the constricting tissues at the mouth of the hernial sac. ... Synonym: herniotome. ... (05 Mar 2000) ...

hero
Origin: F. Heros, L. Heros, Gr. ... 1. An illustrious man, supposed to be exalted, after death, to a place among the gods; a demigod, as Hercules. ... 2. A man of distinguished valor or enterprise in danger, or fortitude in suffering; a prominent or central personage in any remarkable action or event; hence, a great or illustrious person. 'Each man i …

heroic
1. Of or pertaining to, or like, a hero; of the nature of heroes; distinguished by the existence of heroes; as, the heroic age; an heroic people; heroic valor. ... 2. Worthy of a hero; bold; daring; brave; illustrious; as, heroic action; heroic enterprises. ... 3. Larger than life size, but smaller than colossal; said of the representation of a human …

heroin
Semisynthetic drug derived from morphine. Discovered in 1874, it was introduced commercially in 1898 by the bayer company in germany. The name heroin was coined from the german heroisch meaning heroic, strong. Heroin is stronger (more potent) than morphine. ... (12 Dec 1998) ...

heroin dependence
Strong dependence, both physiological and emotional, upon heroin. ... (12 Dec 1998) ...

heroin esterase
<enzyme> Hydrolyzes heroin to yield morphine; n-terminal amino acid sequence given in first source ... Registry number: EC 3.1.1.- ... Synonym: 3,6-diacetylmorphine esterase, acetylmorphine carboxyesterase ... (26 Jun 1999) ...

heroism
The qualities characteristic of a hero, as courage, bravery, fortitude, unselfishness, etc.; the display of such qualities. 'Heroism is the self-devotion of genius manifesting itself in action.' (Hare) ... Synonym: Heroism, Courage, Fortitude, Bravery, Valor, Intrepidity, Gallantry. ... Courage is generic, denoting fearlessness or defiance of danger; …

heron
<zoology> Any wading bird of the genus Ardea and allied genera, of the family Ardeidae. The herons have a long, sharp bill, and long legs and toes, with the claw of the middle toe toothed. The common European heron (Ardea cinerea) is remarkable for its directly ascending flight, and was formerly hunted with the larger falcons. ... There are se …

Herophilus
<person> Herophilus of Chalcedon is the early 'Father of Anatomy' and Galen remarked that he was the first to have dissected human and animal bodies. ... Pliny states Herophilus was the first man to search for the cause of disease by human dissection, and goes on to say that Pharaoh Ptolemy witnessed some of these dissections. Celsus gave Hero …

herpangina
A disease caused by types of coxsackievirus and marked by vesiculopapular lesions about 1 to 2 mm in diameter which are present around the fauces and soon break down to form grayish yellow ulcers; accompanied by sudden onset of fever, loss of appetite, dysphagia, pharyngitis, and sometimes abdominal pain, nausea, and vomiting. ... Origin: G. Herpes, …

herpes
<dermatology> Any inflammatory skin disease caused by a herpes virus and characterised by the formation of clusters of small vesicles. When used alone, the term may refer to herpes simplex or to herpes zoster. ... Origin: L., Gr. Herpes = a spreading cutaneous eruption, from herpein = to creep ... (18 Nov 1997) ...

herpes B encephalomyelitis
A frequently lethal disease of humans caused by infection with a normally latent monkey herpesvirus. ... (05 Mar 2000) ...

herpes catarrhalis
Synonym for herpes simplex ... <virology> The Herpes simplex virus is responsible for several different infections in humans: gingivostomatitis (in children), pharyngitis, oral and lip lesions (recurrent Herpes simplex type 1), proctitis, (type 2) and genital herpes (type 2). ... (27 Sep 1997) ...

herpes circinatus bullosus
Synonym for dermatitis herpetiformis ... <dermatology> A chronic disease of the skin characterised by severe itching, extensive eruption of vesicles (blisters) and papules which occur in groups. May be associated with an occult malignancy in the elderly patient. ... Treatment includes sulpha-based antibiotics. In some cases this condition may b …

herpes corneae
Synonym for herpetic keratitis ... <ophthalmology, pathology> Inflammation of the cornea (and conjunctiva) due to herpes virus type I, a characteristic finding on physical examination of the eye (cornea) is a dendritic pattern (crystalline or tree-like pattern). ... (27 Sep 1997) ...

herpes desquamans
Synonym for tinea imbricata ... An eruption consisting of a number of concentric rings of overlapping scales forming papulosquamous patches scattered over the body; it occurs in tropical climates and is caused by the fungus Trichophyton concentricum. ... Synonym: herpes desquamans, Malabar itch, Oriental ringworm, scaly ringworm, tinea tropicalis, To …

herpes digitalis
Herpes simplex infection of the finger. ... (05 Mar 2000) ...

herpes encephalitis
Synonym for herpes simplex encephalitis ... The most common acute encephalitis, caused by HSV-1; affects persons of any age; preferentially involves the inferomedial portions of the temporal lobe and the orbital portions of the frontal lobes; pathologically, severe haemorrhagic necrosis is present along with, in the acute stages, intranuclear eosino …

herpes facialis
Synonym for herpes simplex ... <virology> The Herpes simplex virus is responsible for several different infections in humans: gingivostomatitis (in children), pharyngitis, oral and lip lesions (recurrent Herpes simplex type 1), proctitis, (type 2) and genital herpes (type 2). ... (27 Sep 1997) ...

herpes febrilis
Synonym for herpes simplex ... <virology> The Herpes simplex virus is responsible for several different infections in humans: gingivostomatitis (in children), pharyngitis, oral and lip lesions (recurrent Herpes simplex type 1), proctitis, (type 2) and genital herpes (type 2). ... (27 Sep 1997) ...

herpes generalisatus
Generalised herpes simplex virus infection. ... (05 Mar 2000) ...

herpes genitalis
<virology> A sexually transmitted infection caused by a herpes virus that results in the episodic outbreak of a painful vesicular skin eruption on the genitalia. ... The incubation period is approximately 6 days from the time of exposure. Other symptoms include fever, headache, muscle aches ... (27 Sep 1997) ...

herpes gestationis
An itching polymorphous bullous eruption which occurs in pregnancy or the puerperium and which recurs in successive pregnancies. ... (12 Dec 1998) ...

herpes gladiatorum
Herpes simplex infection associated with trauma to cutaneous tissue. ... (05 Mar 2000) ...

herpes iris
Synonym for erythema iris ... Concentric rings of erythema varying in intensity, characteristic of erythema multiforme. ... Synonym: herpes iris. ... (05 Mar 2000) ...

herpes labialis
<virology> An infection of the lips or mouth which results in a blistery sore that is caused by Herpes simplex type 1. ... Painful blisters (eventually becoming ulcers) will often presenting on the lips or nasal mucosa. Infected individuals should avoid contact with others due to potential for transfer of the infection. Herpes labialis tends t …

herpes oesophagitis
<pathology> A viral infection causing inflammation and ulcers on the mucosal surface of the oesophagus. This infection typically occurs in the immunocompromised individual (chemotherapy recipient, AIDS patient). ... Symptoms include difficulty swallowing and pain on swallowing. Individuals may also be noted to have Herpes skin lesions (vesicle …

herpes progenitalis
Genital herpes infection caused by herpes simplex virus. ... (05 Mar 2000) ...

herpes simplex
<virology> The Herpes simplex virus is responsible for several different infections in humans: gingivostomatitis (in children), pharyngitis, oral and lip lesions (recurrent Herpes simplex type 1), proctitis, (type 2) and genital herpes (type 2). ... (27 Sep 1997) ...

herpes simplex encephalitis
The most common acute encephalitis, caused by HSV-1; affects persons of any age; preferentially involves the inferomedial portions of the temporal lobe and the orbital portions of the frontal lobes; pathologically, severe haemorrhagic necrosis is present along with, in the acute stages, intranuclear eosinophilic inclusion bodies in the neurons and …

herpes simplex keratitis
<ophthalmology, pathology> A serious viral infection of the cornea that can result in a nonpenetrating erosion (corneal ulcer) of the cornea. ... The causative agent is Herpes zoster. Recurrences may be triggered by stress, exposure to sunlight, use of immunosuppressive medications or another illness. ... Treatment includes antiviral eyedrops.< …

herpes simplex type 1
A virus that causes cold sores and fever blisters. ... (12 Dec 1998) ...

herpes simplex type 2
Different from herpes simplex type 1, herpes simplex 2 causes genital herpes. ... (12 Dec 1998) ...

herpes simplex virus
<virology> A virus in the family Herpesviridae. Type 1 HSVcauses blisters on the lips, nostrils, and possibly on the lining of the eyelids. Type 2 HSV causes blisters and lesions on and aroundgenitalia. ... (09 Oct 1997) ...

herpes simplex virus DNA polymerase
<enzyme> 3'-5'-exonuclease activity is associated with herpes simplex virus DNA polymerase; interacts with hsv-1 ul42 protein ... Registry number: EC 3.1.11.- ... Synonym: hsv DNA polymerase, polymerase associated exonuclease, herpes simplex virus 1 ul30 polymerase, hsv-1 ul30 protein, DNA polymerase ul30, hsv-1 ... (26 Jun 1999) ...

herpes simplex virus protein vmw65
Trans-acting protein that combines with host factors to induce immediate early gene transcription in herpes simplex virus. ... (12 Dec 1998) ...

herpes virus 1, bovine
A species of varicellovirus that causes rhinotracheitis in cattle. ... (12 Dec 1998) ...

herpes virus 1, canid
A species of varicellovirus virus that causes a disease in newborn puppies. ... (12 Dec 1998) ...

herpes virus 1, cercopithecine
A species of simplexvirus that causes vesicular lesions of the mouth in monkeys. When the virus is transmitted to man it causes an acute encephalitis or encephalomyelitis, which is nearly always fatal. ... (12 Dec 1998) ...

herpes virus 1, equid
A species of varicellovirus and the aetiologic agent of a disease in horses causing abortion. It may also cause respiratory catarrh in young horses. ... (12 Dec 1998) ...

herpes virus 1, gallid
A species of varicellovirus found on every continent and affecting mainly chickens and occasionally pheasants. ... (12 Dec 1998) ...

herpes virus 1, human
The type species of simplexvirus causing most forms of non-genital herpes simplex in humans. Primary infection occurs mainly in infants and young children and then the virus becomes latent in the dorsal root ganglion. It then is periodically reactivated throughout life causing mostly benign conditions. ... (12 Dec 1998) ...

herpes virus 1, ranid
A species of the family herpesviridae, whose genus is so far unnamed. It is probably the causative agent of adenoma or adenocarcinoma in the kidneys of certain frogs. ... (12 Dec 1998) ...

herpes virus 1, suid
A species of varicellovirus producing a respiratory infection in swine, its natural host. It also produces an usually fatal encephalomyelitis in cattle, sheep, dogs, cats, foxes, and mink. ... (12 Dec 1998) ...

herpes virus 2, bovine
A species of simplexvirus causing mammillitis in cattle in great britain and south africa. ... (12 Dec 1998) ...

herpes virus 2, gallid
A species of an as yet unnamed genus in the family herpesviridae. It is the aetiologic agent of a disease of domestic fowl and wild birds. ... (12 Dec 1998) ...

herpes virus 2, human
A species of simplexvirus associated with genital infections (herpes genitalis). It is transmitted by sexual intercourse and close personal contact. ... (12 Dec 1998) ...

herpes virus 2, saimirine
A species, of an as yet unassigned genus, in the subfamily gammaherpesvirinae, isolated from squirrel monkeys. It produces malignant lymphomas in inoculated marmosets or owl monkeys. ... (12 Dec 1998) ...

herpes virus 3, equid
A species of varicellovirus causing coital exanthema in horses. ... (12 Dec 1998) ...

herpes virus 3, human
The type species of varicellovirus causing chickenpox (varicella) and herpes zoster (shingles) in humans. ... (12 Dec 1998) ...

herpes virus 4, human
A species of lymphocryptovirus cultivated from cultures of burkitt lymphoma. It is thought to be the causative agent of infectious mononucleosis. ... (12 Dec 1998) ...

herpes virus 6, human
The type species of roseolovirus isolated from patients with aids and other lymphoproliferative disorders. It infects and replicates in fresh and established lines of haematopoietic cells and cells of neural origin. It also appears to alter nk cell activity. Hhv-6 (hblv) antibodies are elevated in patients with aids, sjogren's syndrome, sarcoidosis …

herpes virus 7, human
A species of the family herpesviridae isolated from activated, CD4-positive T-lymphocytes taken from the blood of a healthy human. ... (12 Dec 1998) ...

herpes whitlow
Herpes simplex inflammation at base of fingernail. ... (05 Mar 2000) ...