Flashcards in Male Genitalia-Testis Deck (22):
What are produced in seminiferous tubules of testis?
Spermatozoa are produced under the influence of what?
Testosterone is secreted by what cells?
Interstital cells of Leydig
Interstital cells of leydig are under the influence of what?
Luteinizing hormone (LH)
Testosterone is attached to what cells?
Sertoli cells are found where?
Seminiferous tubules of testis
Where are the testis found?
Why are the testis in the scrotum?
So that it is at a temperature 1 degree C less than the rest of the body.
How big are the testis?
1 1/2 by 1 by 1/2 inch oval shaped gonad and weighs 1/2 ounce
The testis are suspended by what?
Spermatic cord in lower part of scrotum
The testis is enclosed in a thick fibous capsule called what?
The testis is divided into 300 lobules that each contain what?
1-4 seminiferous tubules
The seminiferous tubules empty into 25 straight tubules which join to form what?
The rete testis empty into what?
Epididymis via 15-20 efferent ductules
What are the seven layers that cover the testis from the outside in?
Dartos Muscle within colles fascia
External spermatic fascia
Internal spermatic fascia
Parietal layer of tunica vaginalis
Visceral layer of tunica vaginalis
The dartos muscle is under what control?
Sperm travel through the rete testis into what?
Epididymis where they mature
The epididymis continues as what?
Ductus deferens where sperm are stored
On ejaculation the sperm travel up what?
18'' long ductus deferens
The ductus deferens is joined at it's terminal end by what?
Seminal duct forming ejaculatory duct
The ejaculatory duct opens into posterior part of what?