Vas deferens


Also called ductus deferens, is part of the male reproductive system.

These ducts transport sperm from the epididymis to the ejaculatory ducts in anticipation of ejaculation.

It exits the abdominal cavity through the inguinal canal.

It connects the epididymis with the seminal vesicles to form the ejaculatory duct in order to move sperm.

The vas deferans tube is about 30 centimeters long, 3 to 5 mm in diameter and is surrounded by smooth muscle, with columnar epithelium lined by stereocilia.

It is part of the spermatic cord.

The vas deferens is supplied by the artery of vas deferens, which normally arises from the superior vesical artery, a branch of the internal iliac artery.

During ejaculation process its smooth muscle in the walls of the vas deferens contracts, propelling the sperm forward.

With muscle peristalsis sperm is transf2242ed from the vas deferens into the urethra, collecting secretions from the male accessory sex glands, the seminal vesicles, prostate and the bulbourethral glands, which form the bulk of semen.

In the procedure vasectomy, the vasa deferentia are permanently cut.

The vas deferens may be obstructed.

The vas deferens may be completely absent in congenital absence of the vas deferens, while acquired obstructions can occur due to infections.

It has a sympathetic innervation.

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