| 单词 | trochlea |
| 释义 | ‖ trochlea Anat.|ˈtrɒkliːə|
[L. trochlea: cf. Gr. τροχιλία, -χιλέα, -χαλία sheaf of a pulley.]
A pulley-like structure or arrangement of parts, with a smooth surface upon which some other part, as a bone or tendon, slides;
spec. (a) the surface of the inner condyle of the humerus at the elbow-joint, with which the ulna articulates; (b) the cartilaginous loop through which the superior oblique muscle of the eye passes; (c) the orifice of the metathorax in hymenopterous insects, through which the tendon of the abdomen passes.
1693tr. Blancard's Phys. Dict. (ed. 2), Trochlea, the same that Bathmis. 1826Kirby & Spence Entomol. xxxvi. III. 701 Here the upper orifice in the trunk is the pulley (trochlea), the tendon is the rope (funiculus), and the abdomen is the weight to be lifted. 1854Owen Skel. & Teeth (1855) 64 The distal end of the tibia forms a transverse pulley or trochlea. 1857Dunglison Med. Lex., Trochlea, a pulley;..for example, the articular surface at the lower extremity of the os humeri; so called from its forming a kind of pulley on which the ulna moves... Also, the cartilaginous pulley over which the tendon of the trochlearis muscle passes, at the upper and inner part of the orbit. |
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