ANALIZATORI Flashcards

1
Q

cat % din informatiile asupra mediului inconjurator sunt furnizate de vedere

A

90%

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2
Q

cat reprezinta sclerotica din tunica externa (fibroasa)

A

5/6

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3
Q

cate celule cu bastonase sunt

A

125 de milioane

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4
Q

cate celule cu conuri sunt?

A

6-7 milioane

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5
Q

valoare acuitatii tactile la niv varfului limbii

A

2 mm

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6
Q

valoarea acuitatii tactile in anumite zone de pe toracele posterior

A

50 mm

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7
Q

cate fibre nervoase patrund in corpusculii neurotendinosi Golgi

A

1-3

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8
Q

cate fibre intrafusale formeaza fusurile neuromusculare

A

5-10

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9
Q

cati axoni gasim intr o fila olfactoria

A

10-20

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10
Q

cate mirosuri poate percepe omul

A

10.000

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11
Q

cate mirosuri primare exista

A

50

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12
Q

cati receptori au fost identificati pt gust

A

13

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13
Q

care este puterea de refractie a corneei

A

aprox 40

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14
Q

care e puterea de refractie a cristalinului

A

20 dioptrii- MINIM!

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15
Q

putere totala aparat dioptric (la distanta)

A

60 de dioptrii

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16
Q

unde se focalizeaza razele paralele care vin de la o distanta mai mare de 6 m?

A

la 17 mm in spatele centrului optic ( pe retina ) . CELE CARE VIN DE LA DISTANTA MAI MICA TOT ACOLO SE FOCALIZEAZA DOAR CA CU UN EFORT DE ACOMODARE

17
Q

unde se afla punctul proxim

A

la 25 de cm

18
Q

unde se afla punctul remotum?

A

6 m

19
Q

unde se afla punctul remotum?

A

6 m

20
Q

unde se afla retina la ochiul emetrop

A

la 17 mm in spatele centrului optic

21
Q

unde este situata retina la ochiul miop (hipometrop)

A

la distante MAI MARI de 17 mm

22
Q

unde e situata retina la ochiul hipermetrop?

A

la mai putin de 17 mm de centrul optic

23
Q

care sunt lungimiile de unda la care e sensibila retija

A

390-770 nm

24
Q

cat timp dureaza adaptarea la lumina

A

5 minute

25
Q

de cate ori e mai mare sensibilitatea unui bastonas la intuneric decat la lumina

A

de 10 ori

26
Q

cat % din populatia masculina sufera de daltonism

A

8%