Volume 1

General and descriptive anatomy of the domestic animals / by John Gamgee and James Law.

Date:
1861-1862
Catalogue details

Licence: Public Domain Mark

Credit: General and descriptive anatomy of the domestic animals / by John Gamgee and James Law. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    carpus. The internal also presents a vertical furrow for the passage of the tendon of the extensor suffraginis. The articular surface is ^‘°c^ar irregularly quadrilateral, convex posteriorly, concave anteriorly, most prominent on its internal third, and with a hiatus posteriorly in its middle third. It articulates with the four bones composing the first range of the carpus. The radius is formed of a very thick layer of compact tissue, with structure, some spongy structure at the extremities. It is developed from three £ee™101’- points of ossification, one for the body, and one for each of the extremities. ULNA (oj\evrj, ELBOW). In the adult horse this bone is anchylosed to the posterior surface of Position, the radius. It is an elongated and somewhat irregular bone, gradually Form, decreasing in size from the upper to its lower extremity. It has a median part and two extremities. The middle part may be compared to a triangular pyramid with Middle part, its base turned upwards, and having three surfaces, separated by three borders. The anterior surface presents, superiorly, two small diar- throdial facets, corresponding to those already noticed on the posterior aspect of the head of the radius. Below these is a small rugged space, which becomes united to the radius by interosseous ligament. In- teriorly to this is a smooth portion which contributes to form the radio-ulnar arch. More interiorly still is an elongated and triangular Radio ulnar rugged surface, corresponding through an interosseous ligament to a similar surface on the posterior aspect of the radius. The external surface is slightly convex, and is covered by the flexor metacarpi externus. The internal surface, smooth and slightly concave, is related to the flexors of the foot. The inferior extremity ends in a sharp point toward the lower Lower end. fourth of the radius. In some breeds of horses, and in the donkey and mule, it is frequently prolonged to the lower end of that bone. The superior extremity is developed into a large process (the olecra- upper end. . _ .. . . ° v Olecranon. non), flattened from side to side, and curved inwards. This terminates superiorly in a blunt tuberosity, to which is attached the extensor muscles of the fore-arm. The external surface is convex, the inter- nal concave. The anterior margin is thin and sharp in its superior half; inferiorly it is concave from above downwards, and convex from side to side for articulation with the median groove on the lower arti- culation of the humerus. This part is called the sigmoid cavity