GU 19.2 NOT COMPLETE DONT USE

Question 1

What are the male reproductive system organs?

Answer 1

Testes, system of ducts

Question 2

What are the system of ducts in the male reproductive system?

Answer 2

epididymis
ductus deferense (vas)
ejaculatory ducts
urethra

Question 3

What are the accessory sex glands?

Answer 3

seminal vesicles
prostate
bulbourethreal glands

Question 4

What are some support structures of the male reproductive system?

Answer 4

scrotum and penis

Question 5

What produces sperm?

Answer 5

spermatogenic cells that line the seminiferous tubles

Question 6

What is the role of sertoli cells?

Answer 6

support, protect, and nourish spermatogenic cells
phagocytize degenerating spermatogenic cells
secrete fluid for sperm transport
release inhibin that regulates sperm production

Question 7

What cells secrete the hormone testosterone?

Answer 7

Leydig cells

Question 8

What is the hormone that promotes the development of masculine characteristics?

Answer 8

Androgen

Question 9

What temperature is optimal for the production and survival of sperm?

Answer 9

2-3 C below body temp

Question 10

What is the process by which seminiferous tubules of the testes produce sperm?

Answer 10

spermatogenesis

Question 11

What are the three phases of spermatogenesis?

Answer 11

Meiosis I
Meiosis II
Spermiogenesis

Question 12

When does spermatogenesis occur?

Answer 12

during puberty and continues throughout life

Question 13

What is the time frame from onset cell division in a spermatogonium until sperm is released into the lumen of a seminiferous tubule?

Answer 13

65-75 days

Question 14

What is the diploid number of chromosomes?

Answer 14

46

Question 15

What occures during Meiosis I? (broad)

Answer 15

replication of chromosomes

Question 16

What occurs in meiosis II? (broad)

Answer 16

Division of chromatids into spermatids

Question 17

Spermatids develop into what?

Answer 17

Single sperm cell

Question 18

What rate is sperm produced per day?

Answer 18

300 million per day

Question 19

Most sperm die in the female reproductive tract within what time frame after ejaculation?

Answer 19

48 hrs

Question 20

What are the major parts of the sperm cell?

Answer 20

head and tail

Question 21

What does the sperm head contain?

Answer 21

nuclear material (DNA)
acrosome (penetrating enzyme)

Question 22

The tail of sperm is divided into what parts?

Answer 22

neck
middle piece (mitochondria)
principle piece (tail)
end piece (tapering potion of tail)

Question 23

Mitochondria in the middle piece of the sperm tail is used for what?

Answer 23

provides ATP for locomotion

Question 24

Sperm travels through the seminiferious tubles into what structure?

Answer 24

epididymis

Question 25

What is the site for sperm maturation?

Answer 25

Ductus epididymis

Question 26

What forms the ejaculatory ducts?

Answer 26

union of the ductus deferens and the seminal vesicles

Question 27

What does the urethra pass through?

Answer 27

prostate deep perineal muscles penis

Question 28

What secretes most of the liquid portion of semen?

Answer 28

accessory sex glands

Question 29

What secretes an alkaline, viscous fluid that contains fructose, prostaglandins and clotting proteins?

Answer 29

Seminal vesicles

Question 30

Fructose is used for what by sperm?

Answer 30

ATP production

Question 31

What is the percentage of the volume of semen is fluid secreted by the seminal vesicles?

Answer 31

60%