. The anatomical memoirs of John Goodsir. Anatomy. THE UPPER LIMB IN MAN. 233 is inclined outwards and forwards against the axis of the shoulders, and meets it in the glenoid cavity. The shaft of the clavicle inclines much more backwards against the shoulder axis, passes above it, and abuts against the acromion, above the glenoid cavity. The axis of the shoulder is therefore at right angles, not only to the axis of the spine, but also to that of the haunch (Fig. 1). b. On the other hand, the axis of the shoulder of the animal is oblique, not only towards the haemal aspect, but also towards the
. The anatomical memoirs of John Goodsir. Anatomy. THE UPPER LIMB IN MAN. 233 is inclined outwards and forwards against the axis of the shoulders, and meets it in the glenoid cavity. The shaft of the clavicle inclines much more backwards against the shoulder axis, passes above it, and abuts against the acromion, above the glenoid cavity. The axis of the shoulder is therefore at right angles, not only to the axis of the spine, but also to that of the haunch (Fig. 1). b. On the other hand, the axis of the shoulder of the animal is oblique, not only towards the haemal aspect, but also towards the cephalic ex- tremity of the axis of its spinal column ; that is, in an opposite direction to the obliquity of its haunch, which is oblique towards the coccygeal extremity of the spinal axis (Figs. 2, 3, 4, 5). The quadrupedal scapula is so oblique that the anterior ends of the two bones approach one another ante- riorly. These obliquities are of importance in Fir 2 the animal economy. In the shoulder of the i- Axis of trunk. J 2. Axis of haunch. horse, for example, the more oblique the scapula3- Axis of shoulder the better adapted is the animal for speed. The scapula is the chief bone of the shoulder, as both the coracoid and clavicle may for the most part (lutline diagram of ?> Quadruped. Kin- 8. outline diagram r,-i Monkey when In the hori- zontal position. c. The anatomical conditions which determine the antero- posterior and transverse obliquities respectively of the shoulder in the animal are :— 1st, For the anteroposterior obliquitj—the upward curv-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Goodsir, John, 1814-1867; Lonsdale, Henry, 1816-1876; Turner, William, Sir, 1832-1916. Edinburgh : A. and C. Black
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectanatomy, bookyear1868
