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anatomy and physiology > male reproductive quiz > Flashcards

male reproductive quiz Flashcards

1
Q

only organ system that does not help an organism survive

A

reproductive system

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2
Q

most important parts of the reproductive system

A

gonads

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3
Q

what are gonads

A

organs that produce gametes

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4
Q

what are gametes

A

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

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5
Q

what is the penis used for

A

excretion and reproduction

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6
Q

what does the urethra do

A

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

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7
Q

how is the penis connected to the testes

A

by the vas deferens

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8
Q

what is the glans

A

the head of the penis

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9
Q

the glans has a high concentration of what

A

nerve endings

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10
Q

the glans is generally covered by what

A

the foreskin

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11
Q

when would the glans not be covered by the foreskin

A

if the male is circumcised

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12
Q

how much american males are circumcised

A

roughly 80%

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13
Q

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

A

the cavernosal arteries undergo vasodilation

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14
Q

what else happens when sexually aroused

A

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

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15
Q

when sexually aroused the engorged corpora cavernosa also what…

A

pushes on and constricts veins, stopping blood from leaving

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16
Q

where are the testes found

A

two testes found inside the scrotum

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17
Q

what is the scrotum

A

a sac

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18
Q

the testes are separated into what

A

left and right

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19
Q

the testes are separated by what

A

the perineal raphe

20
Q

what is the perineal raphe

A

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

21
Q

each testis is split into about how many lobules

A

250-300

22
Q

what are lobules

A

little lobes

23
Q

the lobules of the testes each contain

A

1-4 seminiferous tubules `

24
Q

the seminiferous tubules contain what cell groups

A
  • Leydig cells
  • Sertoli cells
  • spermatogenic cells
25
Q

where does the first step of sperm production happen

A

in the seminiferous tubules

26
Q

the first step of sperm production takes roughly

A

65 days

27
Q

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

A

100 million sperm

28
Q

sperm make up how much of ejaculate

A

less than 10%

29
Q

seminal vesicle make up how much of ejaculate

A

adds 60%

30
Q

seminal vesicle adds what to ejaculate

A

fructose
fibrinogen
prostaglandis

31
Q

what does fructose do in ejaculate

A

the sugar is food for sperm

32
Q

what does fibrinogen do for ejaculate

A

causes stickiness

33
Q

what does prostaglandins do for ejaculate

A

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

34
Q

prostate fluids are what percent of ejaculate

A

30%

35
Q

prostate fluids adds what things to ejaculate

A

zinc and enzymes

alkaline pH

36
Q

what do zinc and enzymes do in ejaculate

A

activate sperm

37
Q

what does alkaline pH do ejaculate

A

buffer vagina’s acidic pH

38
Q

why do the testes hang below the body

A

because they function best around 96.5 degress F

39
Q

what is the normal body temp

A

98.6 degrees F

40
Q

are there many ways the body maintains temperature

A

yep

41
Q

what is one of main ways body maintains temp of testes

A

creaster and dartos

42
Q

how does the cremaster and dartos maintain temp

A

cremaster moves testes (cold) or down (hot).

dartos wrinkles when (cold) or unwrinkles (hot) scrotal skin

43
Q

summary of semen release

A 
>>semiferous tubules
>>epididymis 
>>vas deferenns
>>seminal vesicle and prostate add components
>>urethra
44
Q

are sperm continuously produced

A

yes, even if they are not ejaculated from the body

45
Q

what happens when sperm builds up

A

sperm are reabsorbed into the body and recycled

46
Q

what happens in a vasectomy

A

the vas deferens is cut and tied off

47
Q

what happens when the vas deferens is cut and tied off

A

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

anatomy and physiology (25 decks)

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