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Biology of Human Sexuality > Male Reproductive System > Flashcards

Male Reproductive System Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

main purposes

A

make sperm: male gamete, genetic information
transportation system: testis, series of ducts
deposit system: deposit sperm into the female system
produce male hormones: testosterone (t4)

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2
Q

seminal vesicle

A

produce the majority of fluid that makes up semen
(semen = seminal plasma (98%) and sperm (2%)

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3
Q

ejaculatory duct

A

delivers sperm into the urethra

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4
Q

rectum

A

behind seminal vesicle

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5
Q

bladder

A

above prostate

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6
Q

prostate

A

produce the fluid that nourishes and transports sperm (seminal fluid)

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7
Q

vas deferens

A

transports sperm to the urethra in preparation for ejaculation

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8
Q

urethra

A

tube in the penis, urine, pre-cum which clears our tract prior to ejaculation

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9
Q

erectile tissue

A

allows the penis to become hard during erection

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10
Q

penis

A

root, shaft, glans

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11
Q

glans penis

A

tip of the penis, the most sensitive

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12
Q

prepuce/foreskin

A

protects the head of the penis

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13
Q

testis

A

makes sperm and produces testosterone

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14
Q

scrotum

A

protects testes, helps thermoregulation, keeps them several degrees below the average body temperature which is important for sperm production

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15
Q

epididymis

A

transport sperm from rete testes to the vas deferens, sperm storage and maturation

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16
Q

bulbourethra/ cowper’s gland

A

produces precum, neutralize traces of acidic urine in the urethra

17
Q

sertoli cells

A

nurse cells for sperm

18
Q

spermatogenesis

A

64 days,
spermatogonial stem cell
spermatogonium
primary spermatocyte
Meiosis I
secondary spermatocyte
Meiosis II
Early spermatid
sperm cell

19
Q

spermatosoa

A

tail/flagella, head (mitochondria in neck for power)

20
Q

head of sperm

A

nucleus, highly condensed DNA, acrosome (enzyme)

21
Q

penis consists of

A

skin, collagen
3 tubes
corpus cavernosum
corpus spongiosum
urethra

22
Q

thermoregulation

A

testis outside of the body
2-3 degrees below body temp is best for spermatogenesis

23
Q

cremaster muscle

A

raises testicles

24
Q

Production of testosterone

A

in testes, lydis cells makes t4
support sperm production
muscle growth
increase libido

25
Q

steroids

A

testosterone, estrogen, progesterone, cortisone (based on cholesterol)

26
Q

dihydrotestosterone

A

twice as powerful as t4
localized effect
2nd sex characteristics
male hair pattern
- beard growth
- pubic hair

Biology of Human Sexuality (9 decks)

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