Something with that shape. Noncommunicating h. non communiquante obstructive h. normal-pressure h., normal-pressure occult h. à pression normale dementia, ataxia, and urinary incontinence with enlarged ventricles associated with inadequacy of the subarachnoid spaces, but with normal cerebrospinal fluid pressure. Conversive h. de conversion heat developed in tissues by resistance to passage of high-energy radiations. Suffix with hypn to mean sleep-inducing music. Haptoglobin haptoglobine a plasma glycoprotein with alpha electrophoretic mobility that irreversibly binds free hemoglobin, resulting in removal of the complex by the liver and preventing free hemoglobin from being lost in the urine; it has two major genetic variants, Hp 1 and Hp 2. harness harnais the combination of straps, bands, and other pieces that forms the working gear of a draft animal, or a device resembling such gear. Prodromal symptoms of fever, malaise, anorexia, nausea, and vomiting decline with onset of clinical jaundice, angioedema, urticarial skin lesions, and arthritis. Inguinal h. inguinale hernia into the inguinal canal.
Female h. féminin a developmental anomaly in the female in which the urethra opens into the vagina. Half-life varies from one immunoglobulin class to another. Venous h. angiome veineux a cavernous hemangioma in which the dilated vessels have thick, fibrous walls. Hypobaric hypobare having less than normal pressure or weight; said of gases under less than atmospheric pressure, or to solutions of lower specific gravity than another taken as a standard of reference. Growth h. (GH) h. de croissance any of several related hormones secreted by the adenohypophysis that directly influence protein, carbohydrate, and lipid metabolism and control the rate of skeletal and visceral growth; used pharmaceutically as somatrem and somatropin. It has been subdivided on the basis of biochemical phenotype, each type having a generic description and a variety of causes: type I, exogenous hyperlipemia; type IIa, hypercholesterolemia; type II-b, combined hyperlipidemia; type III, remnant hyperlipidemia; type IV, endogenous hyperlipemia; type V, mixed hyperlipemia. S h. S the most common abnormal hemoglobin, with valine substituted for glutamic acid at position six of the beta chain, resulting in the abnormal erythrocytes called sickle cells, and causing sickle cell anemia. Height hauteur the vertical measurement of an object or body. Hair cheveu pilus; a threadlike structure, especially the specialized epidermal structure composed of keratin and developing from a papilla sunk in the dermis, produced only by mammals and characteristic of that group of animals. Emotional h. émotionnelle 1. any type due to emotional stimuli. Toxic h. Suffix with hypn to mean sleep inducing. toxique a type caused by systemic poisoning or certain illnesses. Paraesophageal h. para-œsophagienne hiatal hernia in which the esophagogastric junction is in place and a small or large part of the stomach protrudes into the thorax. Aliphatic h. aliphatique one in which no carbon atoms are joined to form a ring. Mean corpuscular h. (MCH) teneur corpusculaire moyenne en h. the average hemoglobin content of an erythrocyte.
Haustra coli haustrations du côlon, bosselures du côlon sacculations in the wall of the colon produced by adaptation of its length to the taenia coli, or by the arrangement of the circular muscle fibers. Hemoglobinopathy hémoglobinopathie 1. a hematologic disorder due to alteration in the genetically determined molecular structure of hemoglobin, such as sickle cell anemia, hemolytic anemia, or thalassemia. Ophthalmicus zona ophtalmique herpes zoster involving the ophthalmic nerve, with a vesicular erythematous rash along the nerve path (forehead, eyelid, and cornea) preceded by lancinating pain; there is iridocyclitis, and corneal involvement may lead to keratitis and corneal anesthesia. Dowager's h. Suffix with hypn to mean sleep-inducing function. « bosse de la douairière », déformation ostéoporotique postménopausique popular name for dorsal kyphosis caused by multiple wedge fractures of the thoracic vertebrae seen in osteoporosis. 21-h. an enzyme that catalyzes the hydroxylation of steroids at the 21 position, a step in the synthesis of steroid hormones; deficiency impairs the ability to produce all glucocorticoids and causes a form of congenital adrenal hyperplasia. Heterogeneity hétérogénéité the state or quality of being heterogeneous.
Drop h. ballante wristdrop. The theory that the attainment of pleasure and the avoidance of pain are the prime motivators of human behavior. Interruption of blood flow through any vessel or to any anatomical area. Hematin hématine 1. the hydroxide of heme; it stimulates the synthesis of globin, inhibits the synthesis of porphyrin, and is a component of cytochromes and peroxidases; it is also used as a reagent. Hydrotherapy hydrothérapie the application of water, usually externally, in the treatment of disease. Urethral h. urétrale that in which the blood comes from the urethra.
Inner h's t. médiaux du jarret interne the tendons of gracilis, sartorius, and two other muscles of the leg. Alicyclic h. alicyclique one that has cyclic structure and aliphatic properties. Artificielle a state of reduced metabolism, muscle relaxation, and a twilight sleep resembling narcosis, produced by controlled inhibition of the sympathetic nervous system and causing attenuation of the homeostatic reactions of the organism. Rigidus h. rigidus painful flexion deformity of the great toe with limitation of motion at the metatarsophalangeal joint. Sensory h's poils sensoriels hairlike projections on the cells of sensory epithelium. Hyperthyroidism hyperthyroïdie excessive thyroid gland activity, marked by increased metabolic rate, goiter, and disturbances in the autonomic nervous system and in creatine metabolism. Serum h. B. transfusion h. transfusionnelle posttransfusion h. viral h. virale h. A, h. B, h. C, h. D, and h. E. hepatization hépatisation consolidation of tissue into a liverlike mass, as in the lung in lobar pneumonia. Heterochromia hétérochromie diversity of color in a part normally of one color. Hookworm ankylostome a nematode parasitic in the intestines of humans and other vertebrates; two species that commonly cause human infection (hookworm disease) are Necator americanus (American, or New World, h. ) and Ancylostoma duodenale (Old World h. ). Releasing h's facteurs de déclenchement hormones elaborated in one structure that cause the release of hormones from another structure; applied to substances of established chemical identity, while those whose chemical structure is unknown are called releasing factors. Hippocampus hippocampe [L. ] a curved elevation in the floor of the inferior horn of the lateral ventricle; a functional component of the limbic system, its efferent projections form the fornix. It is also used to reduce the frequency of painful sickle cell crisis.
Hypotension hypotension abnormally low blood pressure. Ventral h. ventrale abdominal h. herniation hernie abnormal protrusion of an organ or other body structure through a defect or natural opening in a covering, membrane, muscle, or bone. Concealed h. dissimulée internal h. Duret h's hémorragies de Duret small, linear hemorrhages in the midline of the brainstem and upper pons caused by traumatic downward displacement of the brainstem. Called also cold sore and fever blister. Optic h. optique abnormal sensitivity of the eye to light. A time lag in the occurrence of two associated phenomena, as between cause and effect.
Hyoscyamine hyoscyamine an anticholinergic alkaloid that is the levorotatory component of racemic atropine and has similar actions but twice the potency; used as an antispasmodic in gastrointestinal and urinary tract disorders, as the base or hydrobromide or sulfate salt. Par un traumatisme acoustique noise-induced hearing loss caused by a single loud noise such as a blast. Holoprosencephaly holoprosencéphalie developmental failure of cleavage of the prosencephalon with a deficit in midline facial development; with cyclopia and other facial dysmorphisms in severe cases; due to a variety of chromosomal abnormalities, single-gene disorders, and environmental factors. Lyon h. de Mary Lyon in mammalian somatic cells, all X chromosomes in excess of one are inactivated (in the form of sex chromatin) on a random basis at an early stage of embryogenesis, leading to mosaicism of paternal and maternal X chromosomes in the female. Myocardial h. myocardique chronic but potentially reversible cardiac dysfunction caused by chronic myocardial ischemia, persisting at least until blood flow is restored. Outer h. t. externe du jarret tendon of biceps flexor femoris. Paraduodenal h. paraduodénale an intraabdominal hernia in which the small intestine rotates incompletely during development and becomes trapped in the mesentery of the colon. A a self-limited viral disease of worldwide distribution, usually transmitted by oral ingestion of infected material but sometimes transmitted parenterally; most cases are clinically inapparent or have mild flu-like symptoms; any jaundice is mild.
Hapten haptène partial antigen; a specific nonprotein substance which does not itself elicit antibody formation but does elicit the immune response when coupled with a carrier protein. True h. vrai see hermaphroditism. Nodular h. of the prostate h. bénigne de la prostate benign prostatic h. sebaceous h. sébacée a type of pale, round lesion consisting of malformed sebaceous glands, usually on the face of an older adult. Barth h. de Barth one between the serosa of the abdominal wall and that of a persistent vitelline duct. Aqueous h. aqueuse the fluid produced in the eye and filling the spaces (anterior and posterior) in front of the lens and its attachments.
Somatotrophic h., somatotropic h. somatotrophe growth h. somatotropin- releasing h. (SRH) h. de libération de la somatotropine growth hormone-releasing h. steroid h's h. stéroïdes those that are biologically active steroids; they are secreted by the adrenal cortex, testis, ovary, and placenta and include the progestogens, glucocorticoids, mineralocorticoids, androgens, and estrogens. Lying-in h., maternity h. maternité one for the care of obstetric patients. D, delta h. D infection with hepatitis D virus, occurring either simultaneously with or as a superinfection in hepatitis B, whose severity it may increase. Essential h. essentielle that for which no cause has been determined. Oculaire either of the humors (aqueous and vitreous) of the eye. Capillaire the oozing of blood from the minute vessels. Muscular h. musculaire muscular oversensitivity to pain or fatigue. Hypophosphatasia hypophosphatasie an inborn error of metabolism with abnormally low serum alkaline phosphatase activity and phosphoethanolamine in the urine, most severe in babies before six months. Ototoxic h. ototoxique that caused by ingestion of toxic substances.
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