DocGuy
ANATOMY
Medicine Made Simple
, Male reproductive system
External genitalia Internal genitalia
▪ Scrotum ▪ Epididymis
▪ Testis ▪ Ductus deferens
▪ Penis ▪ seminal vesicle
▪ Prostate
▪ Ejaculatory duct
External genitalia
1. Scrotum- a cutaneous bag containing testes, epididymis, and lower part of vas deferens layers
Skin
Superficial fascia/Dartos muscle
External spermatic fascia - from external oblique muscle
Cremasteric fascia - from internal oblique
Internal spermatic fascia - from fascia transversalis
Clinical
Scrotum is supplied by widely separated dermatomes (L1 & S3)
So whole scrotum is difficult to anesthetize
2. Testis –male gonad
Suspended by the spermatic cord obliquely, upper end tilted forward and laterally
Oval shaped
Epididymis lies along the lateral part of posterior border
Medial surface of epididymis is separated from testis by sinus of epididymis (extension of tunica
vaginalis)
Coverings: - Covered by the layers of the scrotum and in addition by;
Tunica vaginalis (parietal & visceral layers)
Tunica albuginea
Tunica vasculosa
Tunica Vaginalis –lower persistent portion of the processus vaginalis
Has a parietal & a visceral layer with a cavity in between
Covers the whole testis except for its posterior border
1
ANATOMY
Medicine Made Simple
, Male reproductive system
External genitalia Internal genitalia
▪ Scrotum ▪ Epididymis
▪ Testis ▪ Ductus deferens
▪ Penis ▪ seminal vesicle
▪ Prostate
▪ Ejaculatory duct
External genitalia
1. Scrotum- a cutaneous bag containing testes, epididymis, and lower part of vas deferens layers
Skin
Superficial fascia/Dartos muscle
External spermatic fascia - from external oblique muscle
Cremasteric fascia - from internal oblique
Internal spermatic fascia - from fascia transversalis
Clinical
Scrotum is supplied by widely separated dermatomes (L1 & S3)
So whole scrotum is difficult to anesthetize
2. Testis –male gonad
Suspended by the spermatic cord obliquely, upper end tilted forward and laterally
Oval shaped
Epididymis lies along the lateral part of posterior border
Medial surface of epididymis is separated from testis by sinus of epididymis (extension of tunica
vaginalis)
Coverings: - Covered by the layers of the scrotum and in addition by;
Tunica vaginalis (parietal & visceral layers)
Tunica albuginea
Tunica vasculosa
Tunica Vaginalis –lower persistent portion of the processus vaginalis
Has a parietal & a visceral layer with a cavity in between
Covers the whole testis except for its posterior border
1
