Male Genitalia-Testis Flashcards Preview

Board Review: General Anatomy Reproductive Anatomy > Male Genitalia-Testis > Flashcards

Flashcards in Male Genitalia-Testis Deck (22):
1

What are produced in seminiferous tubules of testis?

Spermatozoa

2

Spermatozoa are produced under the influence of what?

Testosterone

3

Testosterone is secreted by what cells?

Interstital cells of Leydig

4

Interstital cells of leydig are under the influence of what?

Luteinizing hormone (LH)

5

Testosterone is attached to what cells?

Sertoli cells

6

Sertoli cells are found where?

Seminiferous tubules of testis

7

Where are the testis found?

Scrotum

8

Why are the testis in the scrotum?

So that it is at a temperature 1 degree C less than the rest of the body.

9

How big are the testis?

1 1/2 by 1 by 1/2 inch oval shaped gonad and weighs 1/2 ounce

10

The testis are suspended by what?

Spermatic cord in lower part of scrotum

11

The testis is enclosed in a thick fibous capsule called what?

Tunica Albuginea

12

The testis is divided into 300 lobules that each contain what?

1-4 seminiferous tubules

13

The seminiferous tubules empty into 25 straight tubules which join to form what?

Rete testis

14

The rete testis empty into what?

Epididymis via 15-20 efferent ductules

15

What are the seven layers that cover the testis from the outside in?

Skin
Dartos Muscle within colles fascia
External spermatic fascia
Cremasteric muscle
Internal spermatic fascia
Parietal layer of tunica vaginalis
Visceral layer of tunica vaginalis

16

The dartos muscle is under what control?

Sympathetic control

17

Sperm travel through the rete testis into what?

Epididymis where they mature

18

The epididymis continues as what?

Ductus deferens where sperm are stored

19

On ejaculation the sperm travel up what?

18'' long ductus deferens

20

The ductus deferens is joined at it's terminal end by what?

Seminal duct forming ejaculatory duct

21

The ejaculatory duct opens into posterior part of what?

Prostatic urethra

22

Sperm travel from prostatic urethra to be deposited into what?

Posterior vaginal fornix on ejaculation