VAS DEFERENS

VAS DEFERENS

1. Definition: Vas deferens is a muscular tube that stores and transports sperm.
2. Origin: It originates from the epididymis.
3. Course: It passes through the inguinal canal and ends in the prostatic urethra.
4. Structure:
   • It is a muscular tube with thick walls.
   • It is lined with a single layer of columnar epithelium.
   • It has an inner longitudinal layer and an outer circular layer of smooth muscle.
   • It has a serous coat and a tunica vaginalis.
5. Function: It stores and transports sperm from the epididymis to the urethra. Vas Deferens is a muscular tube that carries sperm from the epididymis to the prostate gland.

Extent of Ductus Deferens

• Length: Approximately 20-25 cm
• Diameter: 2-3 cm
• Thickness: 2-4 mm

Course and Relations

• Originates from epididymis

• Runs down the posterior abdominal wall

• Passes through the inguinal canal

• Enters the pelvis through the deep inguinal ring

• Ascends to the prostate gland

  Epididymis | | v Vas Deferens | | v Inguinal Canal | | v Deep Inguinal Ring | | v Pelvis | | v Prostate Gland

Blood and Nerve Supply

• Blood Supply: Artery of vas deferens (a branch of internal iliac artery)
• Nerve Supply: Preganglionic parasympathetic fibers from pelvic splanchnic nerves (S2-S4), postganglionic sympathetic fibers from hypogastric plexus

Applied Anatomy of Vas Deferens

• Vasectomy: Cutting or blocking of vas deferens for contraception
• Vasovasostomy: Surgical repair of vas deferens for infertility treatment

[Simple text flowchart showing the applied anatomy of vas deferens] Vasectomy | | v Cutting/Blocking of Vas Deferens | | v Contraception

Vasovasostomy | | v Repair of Vas Deferens | | v Infertility Treatment