. Quain's Elements of anatomy. been employed unintentionally. (G-osse. Essai sm- les Deformations artificielles du Crane, ; V. Lenhossek, Die klinstlichenSchadelverbildungen, &c., 1881.) Posthumous distortions likewise occur in long-buriedskulls, subjected to the combined influence of pressure and moisture. (Wilson, • PrehistoricAnnals of Scotland.) IV.—THE BOISTES OF THE UPPER LIMB. The upper limb consists of the shoulder, the arm, hracMum, the forearm, ajiH-Irachium, and the hand, mamis. The bones of the shoulder are the clavicle andscapula, which together form the pectoral arch or sh
. Quain's Elements of anatomy. been employed unintentionally. (G-osse. Essai sm- les Deformations artificielles du Crane, ; V. Lenhossek, Die klinstlichenSchadelverbildungen, &c., 1881.) Posthumous distortions likewise occur in long-buriedskulls, subjected to the combined influence of pressure and moisture. (Wilson, • PrehistoricAnnals of Scotland.) IV.—THE BOISTES OF THE UPPER LIMB. The upper limb consists of the shoulder, the arm, hracMum, the forearm, ajiH-Irachium, and the hand, mamis. The bones of the shoulder are the clavicle andscapula, which together form the pectoral arch or shoulder-girdle ; in the arm is thehumerus ; in the forearm are the radius and ulna ; and in the hand three groups ofbones, viz., the carpus, metacarpus, and phalanges. a?HE CLAVICLE. The clavicle or collar-bone extends outwards and backwards, from the summit ofthe sternum to the acromion process of the scapula, and connects the upper limbwith the trunk. It is curved like an italic/: the internal curve has its convexity. CONOID Fig. 85.—Eight clavicle, froji above. (Drawn by T. W. P. Lawrence.) | directed forwards, and extends over two-thirds of the length of the t)one ; theouter curve is concave forwards, corresponding to the hollow between the chest andshoulder. The clavicle is broad towards its scapular end, being compressed from abovedownwards, but in the extent of its inner curve it is more or less prismatic orcylindrical. In its description, four surfaces may be distinguished, together with thetwo extremities. The siqwrior surface is broadest in its outer part; it is principally subcutaneous andsmooth, but near the inner extremity Dresents a slight roughness, marking the clavi- THE CLAVICLE. 57 cular attachment of the sterno-cleido-mastoid muscle. The anterior surface oppositethe outer curve is reduced to a mere rough border, from which the deltoid muscletakes origin ; but in the inner half of its extent it is broadened out into an unevenspace, more or less dist
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectanatomy
