Testis Flashcards
what are the two functions of the testis?
1) production of spermatozoa (gameotogensis)
2) secretion of androgens (testosterone)
what is the outer covering of the testis?
Tunica Albuginea
what is the tunica vaginalis?
the deepest layer of the scrotum
the testis is divided by septa into numerous wedge shaped portions called what?
lobules
what is the fibrous compartment in the posterior part of the testis?
Mediastinum testis
what is the sperm production of the testis?
seminiferous tubules
what is an elaborate network of canals located within the mediastinum testis into which the straight tubles empty?
Rete Testis
what connects the rete testis to the head of the epididymis?
efferent ductules
what is the C shaped structure attached to the superior and posterior aspect of the testis?
epididymis
what are the 3 parts of the epyididymis
1) head 2) body 3) tail
the lymphatic drainage of the testis is where?
the lumbar nodes
the lymphatic drainage of the scrotum is where?
superficial inguinal nodes
what do the testis descend thru?
the inguinal canal
what ligament pulls the testis downward and thru the inguinal canal during its decent?
the gubernaculum testis
what is cryptorchidism?
an undecended testicle
what is the % of cryptorchidism in full term infants?
3%
what is the % of cryptochidism in premies?
30%, and this number increases with the more prevalent this is
what happens if testes do not descend?
infertility takes place
what do undecended testes increase the likelyhood of?
the increase risk of cancer
what makes testes descend and if they are aren’t descended when does that usually happen?
testosterone makes them descend, and they usually descend within the 1st week to the 1st month
T/F most undescended testis are bilateral
false, 95% are unilateral
