male reproductive quiz

Question 1

only organ system that does not help an organism survive

Answer 1

reproductive system

Question 2

most important parts of the reproductive system

Answer 2

gonads

Question 3

what are gonads

Answer 3

organs that produce gametes

Question 4

what are gametes

Answer 4

cells that undergo meiosis and have 1 set of chromosomes, rather than those that undergo mitosis and have 2 sets

Question 5

what is the penis used for

Answer 5

excretion and reproduction

Question 6

what does the urethra do

Answer 6

runs from the bladder to the outside of the body, transporting urine

Question 7

how is the penis connected to the testes

Answer 7

by the vas deferens

Question 8

what is the glans

Answer 8

the head of the penis

Question 9

the glans has a high concentration of what

Answer 9

nerve endings

Question 10

the glans is generally covered by what

Answer 10

the foreskin

Question 11

when would the glans not be covered by the foreskin

Answer 11

if the male is circumcised

Question 12

how much american males are circumcised

Answer 12

roughly 80%

Question 13

what is the ‘first thing’ that happens when sexually aroused

Answer 13

the cavernosal arteries undergo vasodilation

Question 14

what else happens when sexually aroused

Answer 14

the corpora cavernosa fill with blood and the penis becomes larger and rigid

Question 15

when sexually aroused the engorged corpora cavernosa also what…

Answer 15

pushes on and constricts veins, stopping blood from leaving

Question 16

where are the testes found

Answer 16

two testes found inside the scrotum

Question 17

what is the scrotum

Answer 17

a sac

Question 18

the testes are separated into what

Answer 18

left and right

Question 19

the testes are separated by what

Answer 19

the perineal raphe

Question 20

what is the perineal raphe

Answer 20

a line of tissue that stretches from the anus to the tip of the penis

Question 21

each testis is split into about how many lobules

Answer 21

250-300

Question 22

what are lobules

Answer 22

little lobes

Question 23

the lobules of the testes each contain

Answer 23

1-4 seminiferous tubules `

Question 24

the seminiferous tubules contain what cell groups

Answer 24

• Leydig cells
• Sertoli cells
• spermatogenic cells

Question 25

where does the first step of sperm production happen

Answer 25

in the seminiferous tubules

Question 26

the first step of sperm production takes roughly

Answer 26

65 days

Question 27

how much sperm can begin being produced daily in the seminiferous tubules

Answer 27

100 million sperm

Question 28

sperm make up how much of ejaculate

Answer 28

less than 10%

Question 29

seminal vesicle make up how much of ejaculate

Answer 29

adds 60%

Question 30

seminal vesicle adds what to ejaculate

Answer 30

fructose fibrinogen prostaglandis

Question 31

what does fructose do in ejaculate

Answer 31

the sugar is food for sperm

Question 32

what does fibrinogen do for ejaculate

Answer 32

causes stickiness

Question 33

what does prostaglandins do for ejaculate

Answer 33

they are hormone-like lipids that stop female immune response to sperm

Question 34

prostate fluids are what percent of ejaculate

Answer 34

30%

Question 35

prostate fluids adds what things to ejaculate

Answer 35

zinc and enzymes | alkaline pH

Question 36

what do zinc and enzymes do in ejaculate

Answer 36

activate sperm

Question 37

what does alkaline pH do ejaculate

Answer 37

buffer vagina's acidic pH

Question 38

why do the testes hang below the body

Answer 38

because they function best around 96.5 degress F

Question 39

what is the normal body temp

Answer 39

98.6 degrees F

Question 40

are there many ways the body maintains temperature

Answer 40

yep

Question 41

what is one of main ways body maintains temp of testes

Answer 41

creaster and dartos

Question 42

how does the cremaster and dartos maintain temp

Answer 42

cremaster moves testes (cold) or down (hot). | dartos wrinkles when (cold) or unwrinkles (hot) scrotal skin

Question 43

summary of semen release

Answer 43

``` >>semiferous tubules >>epididymis >>vas deferenns >>seminal vesicle and prostate add components >>urethra ```

Question 44

are sperm continuously produced

Answer 44

yes, even if they are not ejaculated from the body

Question 45

what happens when sperm builds up

Answer 45

sperm are reabsorbed into the body and recycled

Question 46

what happens in a vasectomy

Answer 46

the vas deferens is cut and tied off

Question 47

what happens when the vas deferens is cut and tied off

Answer 47

traps sperm in the epididymis and causing them all to be reabsorbed