Testicular Disorders UPDATED ACTUAL Questions and
CORRECT Answers
Dartos muscle smooth muscle; wrinkles scrotal skin; pulls scrotum close to body; raises and
lowers scrotum
external spermatic fascia
cremasteric muscle An extension of the transversus abdominus/internal oblique muscle that
descends to the testis with the spermatic cord
- Raises and lowers the testicle in the scrotum
Cremasteric reflex upward pull of testicles and scrotum due to touch
- L1/L2
Tunica vaginalis The delicate layer of serous membrane that covers the testis
- Derived from peritoneum, visceral and parietal layers
Tunica albuginea fibrous capsule of the testes
- serosa of testes
Testes anatomy two glands located in the inguinal region, suspended by the spermatic cord
and surrounded by the scrotal sac
- Paired ovoid structures
- 3-5cm in length
- Smooth and firm in texture
, Testes embryologic development - Starts out intrabdominally
- Begin descent through the inguinal canal around 28wks gestation
- Gubernaculum pulls testicle down
- As testicle migrates from the abdomen, it invaginates the peritoneum forming
the process vaginalis
- Testicle and process vaginalis descend through abdomen via inguinal canal
- By birth, gubernaculum degenerates adn testicle is fixed to scrotum via
scrotal ligament
- Process vaginalis closes
- Testicle sits high in the scrotum
Gubernaculum band of connective tissue that attaches testes to scrotum
Process vaginalis outpocketing of peritoneum that precedes the testis as it moves to the scrotum
during fetal development
Spermatogenesis production of sperm
- Occurs in seminiferous tubules!
- Spermatogoniums in the basal aspect of the tubules released mature sperm
into the lumen of the tubules
- ~74 days to make mature spermatozoa
- Requires a temperature of 34C!
- FSH acts on sertoli cells to regulate gene expression and production of
proteins that support spermatogenesis
Sertoli cells cells found within the seminiferous tubules that provide metabolic support for
the spermatids
- FSH acts upon sertoli cells
- produces inhibin B
Inhibin B inhibits FSH
Testosterone effect on plasma FSH? none
Path of sperm to ejaculation Seminiferous tubules -> rete testis -> epididymis -> ductus deferens ->
ejaculatory duct -> urethra -> urethral meatus
testosterone is required for - embryologic development
- Post natal growth & development
- Puberty & sexual maturation
- spermatogenesis
- Transfer of genetic material (erections)
CORRECT Answers
Dartos muscle smooth muscle; wrinkles scrotal skin; pulls scrotum close to body; raises and
lowers scrotum
external spermatic fascia
cremasteric muscle An extension of the transversus abdominus/internal oblique muscle that
descends to the testis with the spermatic cord
- Raises and lowers the testicle in the scrotum
Cremasteric reflex upward pull of testicles and scrotum due to touch
- L1/L2
Tunica vaginalis The delicate layer of serous membrane that covers the testis
- Derived from peritoneum, visceral and parietal layers
Tunica albuginea fibrous capsule of the testes
- serosa of testes
Testes anatomy two glands located in the inguinal region, suspended by the spermatic cord
and surrounded by the scrotal sac
- Paired ovoid structures
- 3-5cm in length
- Smooth and firm in texture
, Testes embryologic development - Starts out intrabdominally
- Begin descent through the inguinal canal around 28wks gestation
- Gubernaculum pulls testicle down
- As testicle migrates from the abdomen, it invaginates the peritoneum forming
the process vaginalis
- Testicle and process vaginalis descend through abdomen via inguinal canal
- By birth, gubernaculum degenerates adn testicle is fixed to scrotum via
scrotal ligament
- Process vaginalis closes
- Testicle sits high in the scrotum
Gubernaculum band of connective tissue that attaches testes to scrotum
Process vaginalis outpocketing of peritoneum that precedes the testis as it moves to the scrotum
during fetal development
Spermatogenesis production of sperm
- Occurs in seminiferous tubules!
- Spermatogoniums in the basal aspect of the tubules released mature sperm
into the lumen of the tubules
- ~74 days to make mature spermatozoa
- Requires a temperature of 34C!
- FSH acts on sertoli cells to regulate gene expression and production of
proteins that support spermatogenesis
Sertoli cells cells found within the seminiferous tubules that provide metabolic support for
the spermatids
- FSH acts upon sertoli cells
- produces inhibin B
Inhibin B inhibits FSH
Testosterone effect on plasma FSH? none
Path of sperm to ejaculation Seminiferous tubules -> rete testis -> epididymis -> ductus deferens ->
ejaculatory duct -> urethra -> urethral meatus
testosterone is required for - embryologic development
- Post natal growth & development
- Puberty & sexual maturation
- spermatogenesis
- Transfer of genetic material (erections)
