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The Human Eye

Authored by Kiara Smith

Science

8th Grade

Used 47+ times

The Human Eye
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This structure controls the AMOUNT of light entering the eye :

Retina

Pupil

Iris

Lens

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This tough white outer layer protects the eye from dust and irritants and allows muscle attachments :

Optic Nerve

Conjunctiva

Cornea

Sclera

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This structure is found at the center of the eye and helps give it shape :

Vitreous humor

Aqueous humor

Fovea

Choroid

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All are transparent/clear structures of the eye except :

Cornea

Blind spot

Conjunctiva

Lens

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which structure helps to FOCUS light rays on the retina :

Cornea

Iris

Lens

Pupil

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement is TRUE about photoreceptors in the eye ?

Only rods are found in the fovea (yellow spot)

Rods and cones are found in the choroid and helps with color and black and white vision

Cones allow for color vision and rods allow for black and white or grayscale vision

The retina only contains cones for color vision

Answer explanation

Rods and cone cells are photoreceptors found in the retina. Rods work best in dim light and cones work best to detect color and detals.

The fovea (yellow spot) is found in the retina but only contains cones. This allows the eye to see things in color and bright light.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The eye creates tears in order to :

Help keep the cornea moist

Wash away irritants

Kills and fights germs that enters the eye

All of the above

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