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human anatomy and physiology / lab > Final > Flashcards

Final Flashcards

1
Q

The eye measures about

A

2.5cm in diameter

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2
Q

How much of the eye’s anterior surface is visible?

A

1/ 6

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3
Q

The eye is enclosed by

A

Fat and bony orbit

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4
Q

Photo receptors

A

Cells that helpus see color and allow us to see at night

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5
Q

Photoreceptors are distributed over most of the

A

Retina

  • except where your optic nerve leaves your eye
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6
Q

The optic disk (blind spot) is located in the

A

Posterior wall of your eye called the: fundus

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7
Q

Macula

A

Yellow spot

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8
Q

Fovea centralis

A

Focuses on color

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9
Q

Rods

A

Specialized photoreceptors for dim light

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10
Q

Cones

A

Color photoreceptors for high light intensity

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11
Q

To excite rods and cones what must happen?

A

Light must pass through your ganglion cells layer and your bipolar cell layers

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12
Q

Optic nerves

A

Are bundles of fibers

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13
Q

Lens contain

A

Anterior segment & posterior segment

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14
Q

Posterior segments

A

Contain vitreous humor (gel like substance)

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15
Q

Anterior segment

A

Contums aqueous humor (water fluid )

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16
Q

Ciliary process

A

Forms capillaries to maintain pressure in the eye and provide nutrients to Lense and cornea

17
Q

Scleral Venus sinus

A

Posterior to Iris, helps keep retina pressed firmly against wall of the eyeball

18
Q
A

1 ciliary muscle

  1. Ciliary process

3 ciliary zonule

4 cornea

5 Iris

6 pupil

7 anterior pole

8 anterior segment (contains aqueous humor)

9 lens

10 scleral venous sinus

11 posterior segment (contains virteous humor)

19
Q
A

12 Ora serrata

13 sclera

14 choroid

15 Retina

16 macula lutea

  1. Fovea centralis

18 posterior pole

19 optic nerve

20 central artery and vein of retina

21 optic disc (blind spot)

20
Q

What is the ear?

A

Ear is important for hearing and equilibrium

21
Q

Ear is divided into how many parts?

A

External ear

Middle ear

Internal ear

22
Q

External ear

A

Vital to hearing

23
Q

Middle ear

A

Vital to hearing

24
Q

Internal ear

A

Vital to hearing and equilibrium

human anatomy and physiology / lab (9 decks)

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