Session 4 Flashcards
What does the Scrotum develop from?
The labiosacral folds
What is the Scrotum?
A cutaneous sac that is an outpocketing of the anterior abdominal wall
What does the Scrotum contain?
Testis
Epididymis
Spermatic cord
Why is the Scrotum outside of the body?
Because the optimal temperature for Spermatogenesis is 2 degrees below human body temperature (Due to the enzymes involved)
What surrounds the testis?
Tunica vaginalis
Enclosed by the tunica albuginea (Thick fibrous outer covering)
What is the arterial supply of the testis?
Branches of the Abdominal aorta
What is the venous drainage of the testis?
Right testicular vein -> IVC
Left testicular vein -> Left renal vein
What are the sections of the Epididymis?
Head
Body
Tail
How is the Epididymis connected to the seminiferous tubules?
Via efferent ductules and rete testis
*Will become part of the spermatic cord)
What is the Spermatic cord?
Connects structures running to and from the testis
Where does the Spermatic cord run from/to?
From deep inguinal ring (Lateral to inferior epigastric vessels)
To posterior border of the testis (Via inguinal canal and superficial inguinal ring)
What does the Spermatic cord contain?
Neurovascular structures (Testicular artery, Cremasteric artery, artery to vas deferens, Pampiniform plexus, genital branch of genitofemoral nerve) Vas deferens Lymphatics Processus vaginalis (Projection of peritoneium)
What is the Pampiniform plexus?
A configuration of the testicular vein
It aids temperature regulation
Absorbs heat from the arterial blood so enzymes for Spermatogenesis are not effected
What are the coverings of the Spermatic cord?
External spermatic fascia (Aponeurosis of external oblique)
Cresmasteric muscle & fascia (Internal oblique & transversalis)
Internal spermatic fascia (Transversalis fascia)
Coverings come from the embryological dragging when testis descend
What is a Hydrocoele?
Serous fluid in the tunica vaginalis (layers are opened)
Can be of testis or cord
What is a Haematocoele?
Blood in the tunica vaginalis