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PSIO 202 7 Reproductive System > Lecture 36: Male Reproduction > Flashcards

Lecture 36: Male Reproduction Flashcards

1
Q

transport happens in…

A

ejaculatory duct

prostatic urethra

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2
Q

storage and transport happens in…

A

ductus (vas) defens

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3
Q

sperm maturation and storage happens in…

A

epididymis

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4
Q

seminal vesicles makes…

A 
VISCOUS seminal fluid
60% semen vol
fructose (nrg)
prostaglandins (aid in transport)
fibrinogen (coagulation o sperm in female repro tract)
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5
Q

Prostate

A

thin seminal fluid: 30% volume
slightly acidic (used by sperm for ATP production)
proteolytic enzymes (breakdown clotting proteins)
plasmin (antibiotic destroyes bacteria)

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6
Q

bulbourethral (cowper’s) gland

A

mucous like fluid (lubricant tht minimizes damge to sperm)

alkaline (protects sperm from acids in urine)

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7
Q

path of sperm

A 
seminiferous tubules
straight testes
rete testis
epididymis
vas deferens
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8
Q

seminiferous tubules

A

where sperm develop and start to mature

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9
Q

spermatogenesis

A

conversion of undifferntiated germ cells (spermatogonia) to specialized motile sperm (spermatoza)

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10
Q

sperm cell lifecycle?

A 
spermatogonia
primary spermatocyte
2ndary spermatocyte
spermatid
sperm cell
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11
Q

sertoli cells

A

“nurse cells”
support sperm production
support sperm development w/in densely packed seminiferous tubules

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12
Q

leydig cells

A

testosterone producing
located in CT
between loops of seminferous tubules

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13
Q

slides

A 
14
8-10
13
15
16
17
18-20
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14
Q

Inhibin hormones when sperm production SUFFICIENT

A

sertoli cells release it

inhibits FSH secretion by ant pit

dec sperm production

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15
Q

Inhibin hormones when sperm production INSUFFICIENT

A

too slowly

less inhibin by sertoli cells
more FSH secreted
more sperm production

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16
Q

testosterone and dihydrotestosterone during prenatal development

A

leads to differentiation of male structures

17
Q

testosterone and dihydrotestosterone

A

bind to receptors in cell nuclues to alter gene expression

lipid derived

18
Q

testosterone and dihydrotestosterone at puberty

A

cause development of secondary sexual maturation of adult repro system

19
Q

effects of testosterone and dihydrotestosterone at puberty

A

sexual behavior and libido
inc metabolism
deepening voice

PSIO 202 7 Reproductive System (3 decks)

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