Eye Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is the conjunctiva?

A

A thin membrane protecting the eye

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2
Q

What is the pupil?

A

A “black hole” that lets light in

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3
Q

What is the iris?

A

A coloured thing that controls the amount of light let into the eye

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4
Q

What are the ciliary muscles?

A

Muscles controlling the thickness and curvature of the eye

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5
Q

What is the cornea?

A

Bends light to form an image and is also there for protection.

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6
Q

What is the lens?

A

The big thing behind the pupil that fine tunes the image. (Tallula I thinks it’s the thing that we spent ages trying to cut.😂)

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7
Q

What is the vitreous humour?

A

A stiff jelly that supports the back of the eye. Makes up the inside of the eye ball

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8
Q

What is the suspension ligament?

A

The ligament that supports and suspends the lens

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9
Q

What is the retina?

A

The back of the eye that contains rods and cones

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10
Q

What’s the choroid?

A

The bit behind the retina that contains a good blood supply and melanin which absorbs light to avoid internal reflection and glare

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11
Q

What is the blind spot?

A

A part with no receptors present

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12
Q

What is the optic nerve?

A

It contains the sensory neurones linking the retina to the midbrain

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13
Q

What is the sclera?

A

The bit behind the choroid. It is tough and fibrous to prefect the eye

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14
Q

What is a fovea? (Yellow spot)

A

Contains only come cells. Most sensitive part of the retina for colour vision

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15
Q

What does the eye do to focus on near objects?

A

Ciliary muscles contract which slackens the suspension ligament
Muscle tension on the lens is lower
Lens becomes fatter and more curved allowing light to refract more.

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16
Q

What is the near point

A

The closet an object can be from the eye without appearing blurred.

17
Q

What is the aqueous humour?

A

A watery liquid filling the front of the eye.