Pelvic Reproductive Organ Vasculature in Boars

Casts of pelvic vasculature were prepared by perfusion with Batson's compound via the abdominal aorta in post mortem specimens of sexually mature male pigs to clarify patterns of vascular supply of the reproductive organs. Reported here are the features revealed for the male reproductive organs within the pelvic cavity, specifically, the accessory sex glands, and the root of the penis at the pelvic outlet. Casts revealed details including a blood supply for the vesicular glands, prostate, and much of the bulbourethral glands from branches of the prostatic arteries. Each massive, elongated bulbourethral gland received blood supply from two sources. Branches from the prostatic artery entered the cranial end of the gland and supplied approximately two thirds to three fourths of its mass. The remaining caudal portion of the bulbourethral gland received branches off the caudal extent of the internal pudendal artery, just proximal to the branching of the artery of the penis. The artery of the penis sent multiple small branches (arteries of the bulb) into the large penile bulb at the proximal end of the corpus spongiosum penis, a few small branches (deep arteries of the penis) into the crus of the penis, and a dorsal artery of the penis that coursed along the penile body.