. The topographical anatomy of the limbs of the horse. Horses; Physiology. THE LIMBS OF THE HOESE 83 outline, and may be divided into a body and two rami or cornua. Its convex or greater border is connected with the wall by the compara- tively soft and elastic layer of horn to which reference is made above. The free surface of the sole is more or less concave, the degree of concavity depending in some measure on the breed of the animal; but the hollow always contains flakes of horn that are in process of being shed. The inner surface is pitted with small holes for the reception of the papillae
. The topographical anatomy of the limbs of the horse. Horses; Physiology. THE LIMBS OF THE HOESE 83 outline, and may be divided into a body and two rami or cornua. Its convex or greater border is connected with the wall by the compara- tively soft and elastic layer of horn to which reference is made above. The free surface of the sole is more or less concave, the degree of concavity depending in some measure on the breed of the animal; but the hollow always contains flakes of horn that are in process of being shed. The inner surface is pitted with small holes for the reception of the papillae of the solar matrix, and is convex in form with the highest point of the dome close to the apex of the " ; The curvature of the sole is greater in the pelvic than in the thoracic limb. Layer of pale horn uuilinj; wall and ; Inliected part of., wall (" bar"). Cruro-parietal gi'oove. - Intercrural groove Base of cuneus ("bulb").. J^ Fig. 57.—Volar Aspect of the Hoof. Sole. Apex of cuneus. .Crus offcuneus. 3. The cuneus'^ or "frog" (cuneus ungulse) may be best described as having four surfaces. The inner or upper surface presents two grooves, converging and meeting in front, with an abruptly sloping projection or spine (spina cunei ungulse) between them. The whole of this' surface is pitted with minute holes into which the papillae of the cuneate matrix are received. The free surface of the cuneus is triangular in form, and carries two ridges or crura (crura cunei ungulse) that converge and meet in front at the apex (apex cunei ungulse). Between the crura is the deep intercrural groove (sulcus intercruralis) corresponding in position to the spine on the upper surface, and, therefore, deepest posteriorly, with a rapidly shelving anterior part. The medial and lateral surfaces are partly connected with the sole and the infiected parts of the wall, and partly free where they help to bound the cruro-parietal grooves (sulc
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Keywords: ., bookcentury1900, bookdecade1920, booksubje, booksubjectphysiology
