Epifiza si Timusul Flashcards

1
Q

epifiza locatie

A

intre tuberculii cvadrigemeni superiori

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2
Q

in componenta cui intra epifiza

A

in componenta epitalamusului

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3
Q

cu cine are epifiza conexiuni

A

epitalamusul

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4
Q

ce formeaza impreuna cu epitalamusul

A

sistem secretor epitalamo-epifizar

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5
Q

ce hormon secreta epifiza

A

melatonina si vasotocina

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6
Q

ce atiune are melatonina

A

frenatoare pt gonade

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7
Q

ce actiune are vasotocina

A

puternic antigonadotropa si anti LH

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8
Q

pe ce metabolisme au extractele de epifiza control

A

pe toate metabolismele

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9
Q

cu cine are epifiza stranse legaturi

A

cu retina

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10
Q

ce fac stimulii luminosi

A

reduc secretia de epifiza

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11
Q

prin intermediul caror nervi se reduce secretia de melatonina

A

nervi simpatici

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12
Q

cand creste secretia de melatonina

A

la intuneric

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13
Q

ce fel de glanda este timusul

A

mixta

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14
Q

pana cand este glanda endocrina

A

in prima parte a ontogenezei

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15
Q

ce epiteliu contine

A

secretor si organ limfoid

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16
Q

ce rol are in organism

A

de organ limfatic central si de glanda endocrina

17
Q

ce produc extractele de timus

A

ctiune de frenare a dezvoltarii gonadelor, mineralizare osoasa, oprire a mitozelor

18
Q

de cine sunt blocate functiile timusului

A

de hormonii sexosteroizi

19
Q

ce hormoni determina involutia timusului

A

hormonii steroizi

20
Q

care este unitatea histologica a timusului

A

lobul timic

21
Q

din ce este format lobul timic

A

retea de cel reticulare intre care se afla timocitele

22
Q

ce sunt timocitele

A

celule hematoformatoare primordiale(stem)

23
Q

sub influenta cui se transforma timocitele

A

factori locali

24
Q

de unde vin timocitele

A

maduva hematogena

25
Q

in ce sunt transformate timocitele

A

cel limfoformatoare de tip T

26
Q

pe cine insamanteaza timocitele

A

organele limfoide periferice

27
Q

care sunr organele limfoide periferice

A

ganglionii limfatici, splina, amigdalele