sistemul reproducator masculin Flashcards

1
Q

forma testicule
dimesiuni testicule

A

oval, aplatizat
5 cm lungime, 2.5 cm latime

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2
Q

scrot

A

forma de sac
perete gros, multistratificat

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3
Q

rafeu

A

proeminenta ingrosata ce desparte cele doua compartimente ale scrotului

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4
Q

muschiul dartos

A

in profunzimea scrotului
muschi neted subtire
cotractie => aspect incretit

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5
Q

epiteliul tubilor seminiferi este alcatuit din

A

celule germinale - spermatozoizi
cel sustentaculare - de sustinere

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6
Q

drumul spermatozoidului

A

tub seminifer => tub drept => rete testis => canale eferente => epididim => ductul deferent => ductul ejaculator => in afara testiculului

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7
Q

unde capata spermatozoizii mobilitate

A

epididim

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8
Q

regiunile spermatozoizilor

A

-cap-ovoid, aplatizat, condensat, 23 cromozomi, acrozom - enzime pt fertilizare
-gat - f scurt
-piesa intermediara - microtubuli inconjurati de: la int-filamente groase, la ext-mitocondrii
-coada- filam groase inconj de membr = flagel

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9
Q

rolul cel sustentaculare

A

bariera intre vase de sange si tubii seminiferi

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10
Q

ce inconjoara testiculul

A

tunica albuginee

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11
Q

roluri epididim

A

-spermatozoizii capata mobilitate in aprox 2 sapt
-resorb spermatozoizii deteriorati si reziduurile
-adauga secretii si ajusteaza pH acid al spermei

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12
Q

cum se numeste lichidul ce pleaca din testicul

A

lichid seminal

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13
Q

pe unde o ia ductul deferent

A

traverseaza canalul inghinal => intra in abdomen => trece lateral de vezica urinara => trece spre marginea postero-superioara a gl prostatice => inainte de a ajunge la ea form o ampula si se uneste cu ductele de la veziculele seminale => duct ejaculator => uretra

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14
Q

portiunile uretrei

A

-prostatica - primeste secr prostatei
-membranoasa - traverseaza planseul muscular al cav pelviene
-peniana - primeste secretiile de la gl bulbouretrale

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15
Q

vezicula seminala

A

gl pereche, sacciforma
secreta prostaglandine
asigura NUTRITIA - fructoza
alcalin (din epididim)
60% lichidul seminal

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16
Q

prostata

A

gl unica
are muschi neted pt suport
alcalin (pt vagin) => MOBILITATE
30% din lichidul seminal

17
Q

gl bulbouretrale

A

doua gl mici
secreta mucus
alcalin ( pt vagin)
ACTIVEAZA spermatozoizii

18
Q

ce parte a penisului se asociaza cu senzatia de placere

A

glandul penian

19
Q

indepartarea preputului

A

circumcizie

20
Q

3 mase de t erectil in corpul penisului

A

2 corpi CAVERNOSI
1 corp spongios

21
Q

din ce e alc t erectil

A

labirint de canale vasculare inconj de t conj si m neted

22
Q

V de sperma ejaculata

A

2-5 ml

23
Q

ce intra in alc spermei

A

spermatozoizi - 20-100 milioane/ml sperma
lichid seminal
enzime - proteaze

24
Q

ce mai face LH

A

asista spermatogeneza

25
Q

unde incepe spermatogeneza

A

in stratul cel mai extern al cel germinale

26
Q

diviziune meiotica=

A

din 46 cromozomi => doua cel cu 23 cromozomi

27
Q

spermatogeneza

A

spermatogonii => (prin mitoza) spermatocite primare diploide => (prin prima faza a meiozei) 2 spermatocite secundare haploide => (faza a doua a meiozei) 4 spermatide haploide => spermatozoizi