Prostate Gland, Seminal vesicle & Ejaculatory Ducts Dr. Sama-ul-Haque Dr. Sama-ul-Haque.
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Transcript of Prostate Gland, Seminal vesicle & Ejaculatory Ducts Dr. Sama-ul-Haque Dr. Sama-ul-Haque.
Prostate Gland,Prostate Gland,Seminal vesicleSeminal vesicle
&&Ejaculatory DuctsEjaculatory Ducts
Dr. Sama-ul-Dr. Sama-ul-HaqueHaque
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.
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.
Prostate Gland Fibromuscular glandular organ
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)
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
Location of Prostate Gland
Prostate Gland Relations:
Anteriorly: Symphysis pubis Puboprostatic ligaments (Pubic bones)
Posteriorly: Rectal Ampulla Fascia of Denonvillier
(Rectoprostatic fascia)
Laterally: Levator Ani
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
Prostate Gland Apex
Base
Anterior surface
Posterior surface
Inferolateral surfaces
Anatomical lobes of Prostate Gland1. 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
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 Glandular
5. Left lateral lobe Lies on the side of the urethra Glandular
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
Lymphatic drainage & Nerve supply of Prostate Gland
Lymphatic drainage Internal iliac nodes
Nerve supply Inferior hypogastric plexus
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
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
Prostatectomy
TURP (Transurethral resection of prostate)
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
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
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
Thank YouThank You