| ANK repeat | <molecular biology> Amino acid motif found in diverse proteins including ankyrins (hence the name), the notch product, transcriptional regulators, cell cycle regulatory proteins and a toxin produced by the black widow spider. The motif is about 33 amino acids long and is generally found as a tandem array of 2-7 repeats, though ankyrins contain 24 repeats. Their role is not established, but they may be involved in protein protein binding. (18 Nov 1997) |
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| ankerite | <chemical> A mineral closely related to dolomite, but containing iron. Origin: So called from Prof. Anker of Austria: cf. F. Ankerite, G. Ankerit. Source: Websters Dictionary (01 Mar 1998) |
| ankle | That part of the lower limb directly above the foot. (12 Dec 1998) |
| ankle anatomy | <radiology> | | lateral | | medial | coronal | peroneus longus | | tibialis posterior (TOM) peroneus brevis | | flexor digitorum longus (DICK) | | medial plantar artery and vein | | flexor hallucis longus (HARRY) ------------ tibialis anterior extensor hallucis longus extensor digitorum longus _T__H__D____ peroneus longus | | tibialis posterior peroneus brevis | axial | flexor digitorum longus | | medial plantar artery and vein ------------ flexor hallucis longus achilles tendon revised (12 Dec 1998) |
| ankle bone | 1. <anatomy> The astragalus. 2. <surgery> A variety of clubfoot (Talipes calcaneus). See the Note under Talipes. 1. A slope; the inclination of the face of a work. 2. <geology> A sloping heap of fragments of rock lying at the foot of a precipice. Origin: L, the ankle, the ankle bone. (26 Nov 1998) |
| ankle clonus | A rhythmical contraction of the calf muscles following a sudden passive dorsiflexion of the foot, the leg being semiflexed. (05 Mar 2000) |
| ankle injuries | Harm or hurt to the ankle or ankle joint usually inflicted by an external source. (12 Dec 1998) |
| ankle jerk | A contraction of the calf muscles when the tendo calcaneus is sharply struck. Synonym: ankle jerk, ankle reflex, tendo Achillis reflex, triceps surae reflex. (05 Mar 2000) |
| ankle joint | The joint that is formed by the inferior articular and malleolar articular surfaces of the tibia, the malleolar articular surface of the fibula, and the medial malleolar, lateral malleolar, and superior surfaces of the talus. (12 Dec 1998) |
| ankle pain | The ankle is a hinged joint. The severity of ankle sprains ranges from mild (which can resolve within 24 hours) to severe (which can require surgical repair). Tendinitis of the ankle can be caused by trauma or inflammatory forms of arthritis. (12 Dec 1998) |
| ankle reflex | A contraction of the calf muscles when the tendo calcaneus is sharply struck. Synonym: ankle jerk, ankle reflex, tendo Achillis reflex, triceps surae reflex. (05 Mar 2000) |
| ankle region | The region of the lower limb between the leg (crus) and the foot (pes). Synonym: regio talocruralis. (05 Mar 2000) |
| ankle-foot orthosis | A brace (usually plastic) worn on the lower leg and foot to support the ankle, hold the foot and ankle in the correct position, and correct foot drop. (12 Dec 1998) |
| ankylo- | Bent, crooked, stiff, fused, fixed, closed See: ancylo-. Origin: G. Ankylos, bent, crooked; ankylosis, stiffening of the joints, fr. Ankos, a bend, a hollow (05 Mar 2000) |
| ankyloblepharon | A defect of the eyelid; may be congenital or acquired. Synonym: ankyloblepharon. Origin: blepharo-+ coloboma (05 Mar 2000) |