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COA > Anatomy And Physiology Of The Eye > Flashcards

Anatomy And Physiology Of The Eye Flashcards

1
Q

What is the medial rectus muscle’s function?

A

Inward Rotation

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2
Q

What is the lateral rectus muscle’s function?

A

Outward rotation

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3
Q

What is the superior rectus muscle’s function?

A

Upward rotation

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4
Q

What is the inferior rectus muscle’s function?

A

Downward rotation

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5
Q

What is the superior oblique muscle’s function?

A

Intrusion, downward and outward rotation

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6
Q

What is the inferior oblique muscle’s function?

A

Extorsion, upward and outward rotation

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7
Q

What are the three functions of the eyelids?

A
  1. Protect from injury
  2. Exclude light
  3. Lubrication
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8
Q

Name three layers of the eyelids.

A
  1. Palpebral fissure
  2. Medial canthus
  3. Eral canthus
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9
Q

What are the two principal functions of the lacrimal apparatus?

A
  1. Produce tears
  2. Drain fluid
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10
Q

Give two reasons why tears are important to the functioning of the eye.

A
  1. Provides moisture
  2. Eye comfort
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11
Q

What is the relationship between the lacrimal gland, lacrimal sac, and nasolacrimal sac?

A

Help with tears

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12
Q

What is the principal function of the cornea?

A

Focus light rays reflected to the eye

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13
Q

Endothelium function?

A

Maintains proper fluid balance

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14
Q

Epithelium function?

A

Serves as a first line of defense against infection and injury

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15
Q

Bowman’s Membrane function?

A

Acts as an anchor for epithelium

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16
Q

Descemet’s Membrane function?

A

Contributes rigidity

17
Q

Stroma’s function?

A

Contributes rigidity

18
Q

What is the main function of the sclera?

A

Protects intraocular contents

19
Q

Name the three main structures that make up the uveal tract.

A
  1. Iris
  2. Ciliary Body
  3. Choroid
20
Q

What is the function of the ciliary processes?

A

Secrete aqueous humor

21
Q

What is the main function of the choroid?

A

Supply blood to the outer layers of the retina

22
Q

What is the main function of the vitreous?

A

Shock absorber, maintains spherical shape

23
Q

The retina includes a photoreceptor layer containing two types of cells :

A
  1. Rods
  2. Cones
24
Q

What are the rods and cones different functions?

A

Rods - for vision in reduced light
Cones - for central vision

25
Q

The macula contains most of what cells?

A

Cone

26
Q

Why is a balance between the inflow and outflow of aqueous humor important?

A

Maintains the IOP and extremely important in the function of the eye

27
Q

What structure, besides the cornea, provides the eye’s focusing power?

A

Tear film

28
Q

Then lens is attached to the ciliary body by transparent fibers called?

A

Zonules

COA (2 decks)

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