| 单词 | palmar arch |
| 释义 | > as lemmaspalmar arch palmar arch n. Anatomy (a) (more fully superficial palmar arch) an arterial arch that crosses the palm of the hand superficial to the flexor tendons, formed by the terminal portion of the ulnar artery and a superficial branch of the radial artery; (b) (more fully deep palmar arch) an arterial arch that crosses the palm deep to the flexor tendons, formed by the terminal portion of the radial artery and a deep branch of the ulnar artery. ΚΠ 1786 J. Aitken Princ. Anat. & Physiol. I. 173 It [sc. the ulnar artery] forms with the radial artery the palmar arch which is covered by the palmar aponeurosis. 1797 J. Bell Anat. Human Body II. 396 This deep palmar arch gives out many arteries. 1840 G. V. Ellis Demonstr. Anat. 408 The artery that forms the superficial palmar arch is the continuation of the ulnar. 1902 Amer. Naturalist 36 518 In studying the arteries the only fact which throws any light on the problem is the relative size of the digital branches from the palmar arch. 1980 Gray's Anat. (ed. 36) vi. 705 The deep palmar arch can be represented by a horizontal line about 4 cm long drawn from a point just distal to the hook of the hamate bone. < as lemmas |
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