The Senses Flashcards

1
Q

Schlera

A

Preserves the shape of the eye

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2
Q

Choroid

A

Pigmented to prevent reflection of light within the eye

Contains many blood vessels

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3
Q

Retina

A

Contains rods and cones (light receptors)

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4
Q

Fovea

A

Yellow Spot
Place of acute visions
Has most receptors

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5
Q

Cornea

A

Transparent to allow light through

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6
Q

Ciliary body/muscle

A

Alters the shape of the lens

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7
Q

Lens

A

Transparent

Provides fine adjustment for focusing light on the retina

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8
Q

Aqueous humour

A

Fluid

Gives shape

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9
Q

Vitreous humour

A

Jelly-like

Gives shape

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10
Q

Iris

A

Controls the amount of light entering the eye

Makes pupils dilate or constrict

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11
Q

Pupil

A

A hole
Allows light in the lens
Can shape its size

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12
Q

Blind spot

A

Has no rods or cones

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13
Q

Suspensory ligament

A

Holds lens in place

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14
Q

Conjunctiva

A

Protective membrane

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15
Q

Rods and Cones

A

Sensory nerve cells

Found in retina

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16
Q

Rods

A

Light light intensity

Black and white

17
Q

Cones

A

High light intensity

Colour

18
Q

Accommodation

A

The ability of the lens to change its shape to form a clear image

19
Q

Glue Ear

A

Cause: Too much fluid collecting in middle ear
Symptoms: loss of Hearing
Corrective Measures: Grommets in eardrum