. The anatomy of the domestic animals. Veterinary anatomy. Fig. 81.—Third Phalanx of Horse; Lateral View. a, b, .\nterior and posterior extremities of cartilage. Laterally the height diminishes, and the slope becomes steeper, especially' on the medial side. From side to side the curvature is almost semicircular. The surface is rough and porous, resembling pumice stone somewhat. It is perforated by nu- merous foramina of various sizes; a series of larger ones is situated on or near the distal border. On either side the dorsal groove (Sulcus dorsalis)^ passes forward from the angle and ends at o
. The anatomy of the domestic animals. Veterinary anatomy. Fig. 81.—Third Phalanx of Horse; Lateral View. a, b, .\nterior and posterior extremities of cartilage. Laterally the height diminishes, and the slope becomes steeper, especially' on the medial side. From side to side the curvature is almost semicircular. The surface is rough and porous, resembling pumice stone somewhat. It is perforated by nu- merous foramina of various sizes; a series of larger ones is situated on or near the distal border. On either side the dorsal groove (Sulcus dorsalis)^ passes forward from the angle and ends at one of the larger foramina. In the fresh state this surface is covered by the corium of the wall of the hoof. The distal border is thin, sharp, and irregularly notched; there is commonly a wider notch in front. The volar surface (Facies volaris) is arched, and divided into two unequal parts by a curved rough line, the semi- lunar crest (Crista semilunaris). The larger area in front of the crest is cres- cent-shaped, concave, and compara- tively smooth; it corresponds to the sole of the hoof, and may be termed the sole surface. The part behind the crest is much smaller, and is semilunar; it is related to the deejj flexor tendon, and is hence called the flexor surface (Facies flexoria). It presents a central prominent rough area, on either side of which is the volar foramen (Foramen volare), to which the volar groove (Sulcus volaris) conducts from the angle.' The foramina lead into the semilimar canal (Canalis semilunaris) within the bone, from which small canals leatl to some of the foramina of the dorsal sur- ' Formerly termed the pyramidal process. - Formerly termed the preplantar groove. ' Formerly termed the plantar groove and Fig. 82.—Section of Third Phaianx of Horse. Section is cut approximately parallel with volar ! face and opens up the semilunar canal (). Volar amina indicated by Please note that these images are extracted from scanned page im
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