Vision Flashcards

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0
Q

What is the retina?

A

The interior of the eye where images are projected onto.

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1
Q

Photoreceptors

A

Receptors on the eyes that allow us to see

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2
Q

What is the cornea?

A

Transparent convex tissue on the eye that focuses light. Reason for shitty eye sight

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3
Q

Iris

A

the area of the eye that is colored

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4
Q

Pupil

A

Can contract to focus the light

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5
Q

Lens

A

Behind the iris, allows for more focusing.

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6
Q

What kind of receptors are one the retina?

A

Cones and rods

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7
Q

Cones

A

Permit color vision

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8
Q

Rods

A

Sensitivity in darkness

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9
Q

Where are cones most concentrated?

A

In the fovea, the area that is in the direct line of sight.

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10
Q

What photochemical is in rods?

A

Rhodopsin. When it is hit by light, it breaks down which causes AP

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11
Q

What is dark adaptation?

A

You come inside and all the rods are inactive because rhodopsin was destroyed.

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12
Q

Neural convergence

A

This is the reason why we have difference in rods vs cones. They send their info to the bipolar neurons different. Rods send in a lot of info to bipolar, but loses information that way. Cones are 1:1 with the bipolar neurons

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13
Q

Where do bipolar cells send their synapses to?

A

ganglion cells

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