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Male genital organs
ScrotumTestisEpididymidesSpermatic cord
Vas DefernsSeminal vesiclesEjaculatory duct
ProstateProstatic urethraPenis
Scrotum
It is a pouch of lower part of anterior
abdominal wall
It contains testis-epididymides-lower part of
spermatic cord
Layers of scrotum
1-Skin : Wrinkled-pigmented skin
In the midline,there is a line of fusion of 2
lateral labioscrotal
Swellings (corresponding to labia majora)
2-Superficial fascia
Fatty superficial fascia in the abdomen is
replaced in the scrotum by dartos muscle
Membranous layer of superficial fascia in
scrotum is called (colles fascia)
3-Spermatic fascia
-External spermatic fascia is derived fromexternal oblique
muscle
-Cremastric fascia is derived from internal
oblique muscle
-Internal spermatic fascia is derived from
fascia transversalis
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muscle
Lymphatic drainage: Into superficial
inguinal lymph nodes
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Testis
Mobile organ lies within scrotum
Left testis lies at lower level than right
Each testis is surrounded by fibrous
capsule(Tunica albuginea)
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Tunica albuginea sends septa to divide the
testis into lobules
Each lobule contains 13 coiled seminiferous
tubules
Tubules open into network of channels called
rete testis
Efferent ductules connect rete testis to upper
end of epididymis
Epididymis
Lies posterior to testis
Vas deferens lying on its medial side
It consists of coiled tube (20 feet)
It consists of 3 regions (headbodytail)
Sinus of epididymis lies on lateral side
Tube emerges from tail of epididymis to form
(vas Deferens)
Blood supply:
1-Testicular artery (from aorta)
2-Testicular vein emeges from testis &
epididymis to form venous network
(pampiniform plexus)
--Right testicular vein drains into inferior
vena cava
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--Left testicular vein drains into left renal
vein
Lymphatic drainage :
Lymph from testis ascends in spermatic cord
& ends in para-aortic lymph nodes
Spermatic cord It is a collection of structures that passthrough inguinal canal
It begins at deep inguinal ring & ends atthe testis
It consists of
Testicular artery3 vessels Testicular vein
Testicular lymph vessel
Genital branch ofgenitofemoral nerve2 nerves
Autonomic nerve
Vas deferens(ductusdeferens)2 other things
Processesvaginalis(peritoneal diverticulum)
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Covering of spermatic cord
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External spermatic fasciaCremastric fasciaInternal spermatic fascia
Vas Deferens
Thick walled tube (45cm) It conveys sperm from epididymis toejaculatory duct & urethra It arises from tail of epididymis & passesthrough inguinal canal
It emerges from deep inguinal ring &enters the pelvic cavity
It crosses the ureterthen runs medially& downward on posterior surface of bladder Terminal part of vas deferens is dilatedto form Ampulla of vas deferens Inferior end of ampulla joins the seminalvesicle to form ejaculatory duct
Seminal vesicles
Two lobulated organs about (5cm long) lieon posterior surface of bladder
Each seminal vesicle consists of coiledtube embedded in connective tissue
Blood supply :1-ArteryInferior vesicle
Middle rectal2-Veindrains into internal iliac vein Lymphatic drainage : into internal iliaclymph nodes Function : it produces secretion to nourish
the sperms
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Ejaculatory duct It is 2.5 cm long
It pierces posterior surface of prostate &opens into prostatic urethra
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Function : It produces milky alkalinesecretion to neutralize acidity of vagina
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Blood supply :1-inferior vesicle art.2-Middle rectal art.
Prostatic urethra It is 3 cm long
It is the widest part of male urethra On posterior wall, there is longitudinalridge called (urethral crest) On either sides of crest, there is groovecalled prostatic sinus On the summit of urethral crest is adepression called prostatic utricle
Penis
Consists ofrootbodyglansRoot : Consists of 3 masses of erectiletissues(bulb of penis
Right&Left crura of Penis)
Bulb of penis is covered bybulbospongiosus muscle
Crura of penis is covered byischiocavernosus muscle
Body : Free part of penisconsists of 3 masses2 dorsal masses(corpora cavernosa)1 ventral mass (corpus spongiosum)
Glans : Distal expanded part of corpusspongiosum
Base of glans is called corona Prepuce (foreskin)fold of skin coversthe glans
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