Chapter 5 (Spermatic Cord, Scrotum, and Testes) Flashcards
Spermatic cord contains structures running to and from the ____ and suspends the testis in the ____.
Testes; scrotum
(Spermatic Cord)
Beings at the ____ ____, passes through the ____ ____, exits at the _____ _____ ____, and ends in the scrotum at the ______ border of the testis.
inguinal ring, passes through the inguinal canal, exits at the superficial inguinal ring, and ends in the scrotum at the posterior border of the testis.
(Spermatic Cord)
Coverings of the spermatic cord include the:
- Internal spermatic fascia
- Cremasteric fascia
- External spermatic fascia
(Cremaster Muscle)
The _____ _____ contains loops of the cremaster muscles formed by the _____ ____ of the internal oblique muscle arising from the inguinal ligament.
cremasteric fascia; lowermost fascicles
(Cremaster Muscle)
Helps draw the testis ____ in the _____, particularly in response to cold.
superiorly; scrotum
(Cremaster Muscle)
In warm environments, the cremaster ____ and the testis ____ ____ in the scrotum.
relaxes; descend deeply
(Cremaster Muscle)
Both responses occur in an attempt to regulate temperature of the testes for _________
spermatogenesis
(Cremaster Muscle)
The cremaster muscle is innervated by the _______ nerve form the lumbar plexus
Genitofemoral
The scrotum is a cutaneous sac consisting of two layers:
- Heavily pigmented skin
- Dartos fascia
(Scrotum)
Dartos fasica
A fat-free fascial layer including smooth muscle fibers (dartos muscle) responsible for the wrinkled appearance of the scrotum.
(Scrotum)
Contraction of the dartos fascia attached the scrotum to _____when cold and ____ ____ _____ in holding the testes closer to the body to help ___ ___ ____.
wrinkle when cold and assisting the cremaster; reduce heat loss
Nerve supply to the scrotum includes branches of the ___ ___to the antero lateral surface and branches of the ___ ___ to the posterior and inferior surfaces.
lumbar plexus; sacral plexus
(Scrotum: Nerve Supply)
These nerves include:
- Genital branch of the genitofemoral nerve
- Anterior scrotal nerves
- Posterior scrotal nerves
- Perineal branches of the posterior cutaneous nerve of the thigh
(Scrotum: Nerve Supply)
Genital branch of genitofemoral nerve
Supply the anterolateral surface
(Scrotum: Nerve Supply)
Anterior scrotal nerves
(AKA branches of the ilio-inguinal nerve) supplying the anterior surface