1. Prostate Gland, Seminal vesicle & Ejaculatory Ducts
Dr. Sama-ul-Haque

2. Objectives Discuss the site, size and relation of prostate.
Describe the fasciae covering and related to the prostate (true and false capsules).
Describe its anatomical and surgical lobes.
Discuss its blood, nerve supply and lymphatic drainage.
Compare between the site of enlargement of the prostate in senile prostatic hyperplasia and cancer prostate.

3. Objectives Define the seminal vesicle.
Discuss its site, relation, blood and nerve supply.
Discuss its lymphatic drainage.
Define the ejaculatory duct.
Describe its site, beginning and termination.

4. Prostate Gland Fibromuscular glandular organ Site:
Glandular part : 2/3rd
Fibromuscular part: 1/3rd
Site:
Lies between the neck of the urinary
bladder above and the urogenital
diaphragm below
Size:
1.25 inches (3 cm)

5. Prostate Gland Relations: Superiorly: Neck of the urinary bladder
Urethra enters the center of the base of the prostate
Inferiorly:
Urogenital Diaphragm
Urethra leaves prostate just above its apex on the anterior surface

6. Location of Prostate Gland

7. Prostate Gland Relations: Anteriorly: Symphysis pubis
Puboprostatic ligaments (Pubic bones)
Posteriorly:
Rectal Ampulla
Fascia of Denonvillier
(Rectoprostatic fascia)
Laterally:
Levator Ani

9. Capsule of the Prostate Gland
True capsule:
Prostate is surrounded by a fibrous capsule which contains prostatic plexuses of nerves
and veins
False capsule:
Visceral layer of pelvic fascia forms a fibrous prostatic sheath outside the true capsule

10. Prostate Gland Apex Base Anterior surface Posterior surface
Inferolateral surfaces

12. Anatomical lobes of Prostate Gland
1. Anterior lobe
Lies in front of urethra
Muscular
Devoid of glandular tissue
2. Median or Middle lobe
Lies between urethra and the ejaculatory ducts
Glandular

13. Anatomical lobes of Prostate Gland
3. Posterior lobe
Lies behind urethra and below ejaculatory ducts
Glandular
4. Right lateral lobe
Lies on the side of the urethra
5. Left lateral lobe

14. Blood supply of Prostate Gland
Arterial supply:
Branches of Internal Iliac artery
Branches from inferior vesical artery
Branches from middle rectal artery
Branches from Internal pudendal artery
Venous drainage
Veins form prostatic plexus
Drain into internal iliac vein

17. Lymphatic drainage & Nerve supply of Prostate Gland
Internal iliac nodes
Nerve supply
Inferior hypogastric plexus

20. Benign Prostatic Hypertrophy (BPH)
Occurs in middle age
Median or Middle lobe is involved
Projects into urinary bladder
Obstructs prostatic urethra and internal urethral orifice

21. Prostatic Cancer Occurs in old age (after 55 years usually)
Posterior and lateral lobes are involved
Palpated during PR examination
Can spread to iliac and sacral lymph nodes and can spread to vertebral column and brain through venous channels

22. Prostatectomy
TURP (Transurethral resection of prostate)

23. Seminal vesicles Lobulated organ 2 inches (5 cm) long
Lies on the posterior surface of the urinary bladder
Seminal vesicle joins the vas deferens to form ejaculatory ducts on each side

24. Blood supply of Seminal vesicles
Arterial supply
Branches from inferior vesical artery
Branches from middle rectal artery
Venous drainage
Drain into internal iliac vein
Lymphatic drainage
Internal iliac nodes

26. Ejaculatory ducts Less then 1 inches (2.5 cm) long
Formed by the union of duct of seminal vesicle and vas deferens
Pierce posterior surface of the prostate
Opens into the prostatic part of the urethra

28. Thank You