Male reproductive physiology

Question 1

What are the male reproductive organs?

Answer 1

Testicles - lie within the scrotum

Question 2

What does the temperature of the testicles have to be below

Answer 2

the temp of the body in order to facilitate sperm production properly

Question 3

what do the scrotum do?

Answer 3

1-2 degrees lower temperature then the abdo cavity

Question 4

posterior to the testis is what gland?

Answer 4

epididymis

Question 5

the sperm produced in the tested move to

Answer 5

epididymis - 3 months and mature - travel out

Question 6

epididymis is connected by what tube

Answer 6

vas deferens, pass through inguinal region and curl around the bladder
- converges into urethra tube after prostate, travels up penis

Question 7

what creates semen

Answer 7

seminal vesicles and prostate

Question 8

In order for male fertility to remain intact - what do you need?

Answer 8

the structure of all organs and sperm pathway has to be intact

Question 9

Structure of the testes is divided into?

Answer 9

seminiferous tubules

Question 10

What are the testes surrounded by?

Answer 10

fibrous capsule called tunica albuginea

- penetrates into the testes and divides it into several lobules

Question 11

site of sperm production?

Answer 11

seminiferous tubules

Question 12

After the tubules merging, what do they lead into?

Answer 12

the head of the epididymis

- the body and the tail

Question 13

What emerges from the epididymis tail?

Answer 13

vas deferens

Question 14

all the lobule outflow goes into ?

Answer 14

the rete testis

Question 15

How many cells within the seminiferous tubules?

Answer 15

3

Question 16

What cell produce sperm?

Answer 16

germ cells

Question 17

as sperm are produced they are driven towards?

Answer 17

the lumen of the testis

Question 18

in addition to the germ cells, what other cells do you get?

where are they situated

Answer 18

Sertoli/sustentacular cells- inbetween the germ cells

support sperm producing cell, produce inhibin

Question 19

What cells surround the seminiferous tubules?

Answer 19

Interstitial(Leydig) cells- produce testosterone

Question 20

What do Interstitial(Leydig) cells produce? - needed for?

Answer 20

testosterone

- Male secondary sexual characters

Question 21

main functions of the testes

Answer 21

Sperm production Millions of viable sperm per day
-Average time from production to ejaculation 64 days

Testosterone production

Question 22

Average sperm cycle is?

Answer 22

3 months

Question 23

What controls spermatogenesis?

Answer 23

Testosterone production