» The Lymphatic Structures of the Pelvis
The medial iliac lymph nodes grouped about the terminal branches of the aorta have been shown in Fig. 34.18. They are continued into the pelvic cavity by sacral nodes below the sacrum and anorectal nodes below the tailhead.
The latter nodes drain the rectum, anus, and tail; their efferents pass to the medial iliac nodes. Ischial nodes receiving lymph from the perineum, caudal thigh, and popliteal nodes and gluteal nodes draining the gluteal region lie lateral to the sacrosciatic ligament. Both sets also drain to the medial iliac nodes.
FIG. 35.9 Transverse sections of the penis. (A) Proximal to the sigmoid flexure. (B) Distal to the sigmoid flexure. (C) Free end of penis. 1, Tunica albuginea; 2, connective tissue surrounding penis; 3, dorsal artery of penis; 4, corpus cavernosum; 5, urethra; 6, corpus spongiosum; 7, urethral groove; 8, blood vessels; 9, external urethral orifice; 10, thin glans penis.
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