. The topographical anatomy of the limbs of the horse. Horses; Physiology. THE LIMBS OF THE HOESE 131 N. TIBIALIS.—The tibial 1 nerve, the larger of the two divisions of the sciatic, has already been followed down the back of the thigh to the point where it disappears between the two heads of the gastrocnemius muscle. The rest of its course is now revealed. Between the heads of the gastrocnemius the nerve comes into relation with the plantaris muscle, the medial border of which it follows closely until the level of the summit of the tuber ealcanei is reached. At this point it divides into the
. The topographical anatomy of the limbs of the horse. Horses; Physiology. THE LIMBS OF THE HOESE 131 N. TIBIALIS.—The tibial 1 nerve, the larger of the two divisions of the sciatic, has already been followed down the back of the thigh to the point where it disappears between the two heads of the gastrocnemius muscle. The rest of its course is now revealed. Between the heads of the gastrocnemius the nerve comes into relation with the plantaris muscle, the medial border of which it follows closely until the level of the summit of the tuber ealcanei is reached. At this point it divides into the medial and lateral plantar nerves, which, passing down the Posterior femoral vessels IVJ. plantaris. N. tibialis, Jl. semitendinosus. M. gastrocuemius — (caput mediale). N. cutaneus surje posterior, SI. popliteus, il. tibialis posterior.— — yU M. '4jU+ -M. biceps femoris. - Lig, "feraoro-patellaria laterale. Popliteal artery and vein. Lig. coUaterale fibulare. Ligamenta patellre. Lateral meniscus. Sim. peroneeus tertius et ex- tensor digitorum longns W. perotijcus profundus, - - M. peronieus longus. - - N. peronreus superficialis. - - M. extensor digitorum longus. Fig. 87.—Deep Dissection of the Popliteal Kegioii. shorb canal at the back of the tarsus, will be traced in the metatarsus in a later dissection. In its course down the leg the tibial nerve is related to a small artery (and its companion vein) that forms an anas- tomotic link between the posterior femoral and recurrent tibial arteries. The collateral branches of the tibial nerve are the proximal and distal muscular rami, and the posterior cutaneous sural nerve. The proximal muscular hranch (ramus muscularis proximalis) was examined during the course of the dissection of the thigh. The origin of the posterior cutaneous sural nerve (n. cutaneus surse posterior (medialis)) was noted as occurring about the middle of the thigh. The nerve crosses the surface of the lateral head of th
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Keywords: ., bookcentury1900, bookdecade1920, booksubje, booksubjectphysiology
