| GCVF | great cardiac vein flow |
|---|---|
| GT | gait training; galactosyl transferase; gastrostomy; generation time; genetic therapy; gingiva treatm... |
| MAAGB | Medical Artists Association of Great Britain |
| TGA | taurocholate gelatin agar; thyroglobulin activity; total glycoalkaloids; total gonadotropin activity... |
| TGV | thoracic gas volume; transposition of great vessels |
| great toe | <anatomy, ornithology> The first, or preaxial, digit of the hind limb, corresponding to the pollux in the fore limb; the great toe; the hind toe of birds. Origin: NL, fr. L. Hallex, allex. Source: Websters Dictionary (01 Mar 1998) |
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| great-toe reflex | <clinical sign> Extension of the great toe and abduction of the other toes instead of the normal flexion reflex to plantar stimulation, considered indicative of pyramidal tract involvement ("positive" Babinski). Synonym: Babinski reflex, Babinski's phenomenon, great-toe reflex, paradoxical extensor reflex, toe phenomenon. (05 Mar 2000) |
| great vein of Galen | A large, unpaired vein formed by the junction of the two internal cerebral veins in the caudal part of the tela choroidea of the third ventricle; it passes caudally between the splenium of the corpus callosum and the pineal gland, curving dorsally to merge with the inferior sagittal sinus to form the straight sinus. Synonym: vena cerebri magna, great cerebral vein, great vein of Galen. (05 Mar 2000) |
| great vessels | <radiology> 5 vessels above aortic arch R BCV L BCV right and left brachiocephalic VEINS L CCA left common carotid artery R BCA L SCA right brachiocephalic artery left subclavian artery (12 Dec 1998) |
| cistern of great cerebral vein | <anatomy, vein> An expansion of the subarachnoid space extending forward between the corpus callosum and the thalamus; it encloses the internal cerebral veins which caudally join to form the vena magna cerebri (Galen's vein). Synonym: ambient cistern, Bichat's canal, Bichat's foramen, cistern of great vein of cerebrum, cisterna ambiens, cisterna superioris, cisterna venae magnae cerebri, superior cistern. (05 Mar 2000) |
| cistern of great vein of cerebrum | <anatomy, vein> An expansion of the subarachnoid space extending forward between the corpus callosum and the thalamus; it encloses the internal cerebral veins which caudally join to form the vena magna cerebri (Galen's vein). Synonym: ambient cistern, Bichat's canal, Bichat's foramen, cistern of great vein of cerebrum, cisterna ambiens, cisterna superioris, cisterna venae magnae cerebri, superior cistern. (05 Mar 2000) |
| plague, great | The Great Plague that swept London in 1665 was probably not really the plague but rather typhus. (12 Dec 1998) |
| corrected transposition of the great vessels | Anatomically or physiologically corrected malposition of the great arteries. In anatomically corrected transposition, they arise from the correct ventricles but have an abnormal relation to each other (actually a malposition rather than a transposition.) In physiologically or functionally corrected transposition, the aorta arises from a systemic ventricle that has the morphologic characteristics of a right ventricle, and the pulmonary artery arises from a "venous" ventricle that has the morphologic characteristics of a left ventricle. (05 Mar 2000) |
| posterior branch of great auricular nerve | <anatomy, nerve> Provides general sensory fibres to skin of posterior auricle and over mastoid process. Synonym: ramus posterior nervi auricularis magni. (05 Mar 2000) |
| short extensor muscle of great toe | <anatomy, muscle> The medial belly of extensor digitorum brevis musculus, the tendon of which is inserted into the base of the proximal phalanx of the great toe. Synonym: musculus extensor hallucis brevis, short extensor muscle of great toe. (05 Mar 2000) |
| short flexor muscle of great toe | <anatomy, muscle> Origin, medial surface of cuboid and middle and lateral cuneiform bones; insertion, by two tendons, embracing that of the flexor longus hallucis, into the sides of the base of the proximal phalanx of the great toe; action, flexes great toe; nerve supply, medial and lateral plantar. Synonym: musculus flexor hallucis brevis, musculus flexor brevis hallucis, short flexor muscle of great toe. (05 Mar 2000) |
| intermediate great muscle | <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 great muscle, intermediate vastus muscle. (05 Mar 2000) |
| transposition of great vessels | <embryology> A congenital cardiovascular malformation in which the aorta arises entirely from the right ventricle and the pulmonary artery from the left ventricle, so that the venous return from the peripheral circulation is recirculated by the right ventricle via the aorta to the systemic circulation without being oxygenated in the lungs. There is an intracardiac shunt, increased pulmonary vascularity, cyanosis. The chest X-ray shows that the heart size may be normal at birth, but it gradually enlarges with a globular or egg-on-its-side appearance. (27 Jun 1999) |
| transposition of the great vessels | Congenital malformation in which the aorta arises from the morphologic right ventricle and the pulmonary artery from the morphologic left ventricle resulting in two separate and parallel circulations. The condition is lethal unless some communication exists between the systemic and pulmonic circulation after birth; otherwise, unoxygenated venous blood inappropriately enters the systemic circulation, and oxygenated pulmonary venous blood is inappropriately directed to the pulmonary circulation. The life sustaining communication may be an intra-atrial passage or a patent ductus arteriosus. Synonym: transposition of arterial stems. (05 Mar 2000) |
| lateral great muscle | <anatomy, muscle> Origin, lateral lip of linea aspera as far as great trochanter; insertion, tibial tuberosity by way of common tendon of quadriceps femoris and patellar ligament; action, extends leg; nerve supply, femoral. Synonym: musculus vastus lateralis, lateral great muscle, lateral vastus muscle, musculus vastus externus. (05 Mar 2000) |