Читать книгу Bovine Reproduction - Группа авторов - Страница 29

The innervation of the external genitalia of the bull consists of the pudendal nerve and its branches. The pudendal nerve carries motor, sensory, and parasympathetic nerve fibers [4]. The pudendal nerve passes through the pelvic cavity medial to the sacrosciatic ligament and divides as it approaches the lesser ischiatic notch of the pelvis into proximal and distal cutaneous branches supplying the skin of the caudal hip and thigh [4, 8]. The pudendal nerve continues through the ischiorectal fossa, terminating in a preputial branch, a scrotal branch, and finally the dorsal nerve of the penis [6]. The pelvic nerve provides parasympathetic innervations from the sacral plexus [1]. The hypogastric nerve contributes sympathetic fibers from the caudal mesenteric plexus to the genital system [1] (Figure 1.14).

Figure 1.14 Nerves of the penis: Sc = sciatic nerve, Pu = pudendal nerve, Pc = proximal cutaneous branch of pudendal nerve Scl = sacrosciatic ligament, Stl = sacrotuberous ligament, R = rectum.