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Bioloogia > Silma osade ülesanded > Flashcards

Silma osade ülesanded Flashcards

1
Q

silmalau

A

Silmalaud sulguvad automaatselt, kui miski puudutab ripsmeid

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2
Q

ripsmed

A

takistavad tolmu ja teiste väikeste võõrosakeste silma sattumist

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3
Q

sarvkest

A

aitab koondada valguskiiri läätsele

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4
Q

vikerkest

A

reguleerib silmaava suurust

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5
Q

vesivedelik

A

kaitseb läätse

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6
Q

silmalääts

A

murrab valguskiiri, nii et need koonduvad ühtepunti võrkkestal

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7
Q

ripslihas

A

ümbritseb läätse ning murrab selle kuju ja hoiab ka paigal

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8
Q

kõvakest

A

katab väljastpoolt silmamuna tagumist osa

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9
Q

soonkest

A

seal on rikkalikult veresooni, mis varustavad silma rakke hapniku ja toitainetega

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10
Q

võrkkest

A

katab silma tagaosa seestpoolt ning selles on valgustundlikud rakud

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11
Q

kollatähn

A

on koht võrkkestal pupilli vastas, kus nägemisteravus on kõige suurem

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12
Q

nägemisnärv

A

juhib närviimpulsid ajusse

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13
Q

pimetähn

A

on koht võrkkestal, kus pole valgustundlikke rakke ja algab nägemisnarv

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14
Q

klaaskeha

A

aitab koondada valguskiiri

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Bioloogia (12 decks)

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