File:Anatomy, descriptive and surgical (1877) (14765003682).jpg

Identifier: anatomydescripti1877gray (find matches)
Title: Anatomy, descriptive and surgical
Year: 1877 (1870s)
Authors: Gray, Henry, 1825-1861 Holmes, Timothy, 1825-1907
Subjects: Anatomy Human anatomy
Publisher: (London : Longmans, Green)
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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l bone. Lay it with its prominent ridge* upwards and towards yourself. The saddle-shaped surface for the thumb is on the side to which the bone belongs. Articulations. With four bones : the scaphoid above, the trapezoid and secondmetacarpal bones internally, the first metacarpal below. Attachment of Muscles. Abductor pollicis. Flexor ossis metacarpi, and part of theFlexor brevis pollicis. The Trapezoid is the smallest bone in the second row. It may be known byits wedo-e-shaped form, the broad end of the wedge forming the dorsal, the narrowend the palmar surface; and by its having four articular surfaces touching eachother, and separated by sharp edges. The superior surface, quadrilateral in form,smooth and slightly concave, articulates with the scaphoid. The inferior surface * This prominent ridge is between the deep groove for the tendon of the Flexor carpiradialis and the Mo;i-artioular surface. CARPUS. 107 95.—Bones of the Left Hand. Palmar Surface. €u/r/i a s for -t^ MENS ^^^^
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FUE».OBROrUNOUS ib8 THE SKELETON. aiticulates wifcli the upper end of the second metacarpal bone ; it is convex fromside to side, concave from before backwards, and subdivided, by an elevated ridge,into two unequal lateral facets. The posterior or dorsal and anterior or •palmarsurfaces are rough, fof the attachment of ligaments, the former being the largerof the two. The external surface, convex and smooth, articulates with thetrapezium. The internal surface is concave and smooth below, for articula-tion with the OS magnum ; rough above, for the attachment of an interosseousligament. Lay it with its smaller non-articular surface upwards, and the edge whichseparates the two concave articular facets forwards. The lower end of the bonewill then curve aivcuj from the side to which it belongs.* Articulations. With four bones; the scaphoid above, second metacarpal bonebelow, trapezium externally, os magnum internally. Attachment of Muscles. Part of the Flexor brevis pollicis. The Os Magn

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