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30 Cards in this Set
- Front
- Back
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Eyebrows protect from...
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Dirt
Debris Sweat Light |
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Levator Palbebralis
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Muscles That Opens Eyelids
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Orbicularis Oculi
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Muscles That Closes Eyelids
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Default Position of the Eyelids (Open or Closed)?
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Open
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Squint to...
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Light Protection
& Focus |
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Canthus (2)
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Medial & Lateral
Corners of Eye |
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Epicanthic Fold
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Drapes eyelids
& Covers Caruncle |
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Meibomian Glands
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Secrete Oil
(Lubricates [lol] Lids) |
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Purpose of Conjunctiva
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(Layer of epithelials on Cornea
Feeds : Cleans : Lubricates Cornea |
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Functions of Tears
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Moisture, Warms, Cleans, Feeds Cornea
Humans Only: Emotional Release, Convey Emotions to others |
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Componants of Tears
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Saline
Lysozyme (kill bacteria) Macin (Thin Mucus) Blood Hormones |
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Control Shape of Lense
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Ciliary Bodies connected to Suspensory Ligaments
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4 Rectus Muscles
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Superior, Oculomotor, Lateral, & Inferior
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2 Obliques
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Superior = Up & Out
Inferior = Down & In |
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Saccades
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Eyes do little looks at things
= More 3D info |
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Keratinized
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No Organelles
Cells = Hardened Protoplasm |
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Cornea
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Keratinized, No Blood Vessels, Refracts most light here
Fed by Conunction, Tears, and Aqueous |
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Sclera
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White of the Eye
Maintains shape of the eye High amount of Blood Vessels |
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Rods
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Night Vision
Black & White Perifs Rhodopsin (Visual Purple) |
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Cones
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Chromatic Vision
Bright Vision Retenine (Visual Yellow) Located in Macula Lutea |
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Macula Lutea
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Disc
Only Cones Center = Fovea Centralis |
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Fovea Centralis
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Highest Concentration of Cones
Green in center, then Red, then Blue = Fine Vision |
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Bipolar Bodies
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Grouped by Color
Send info to brain (?) |
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Multiganleonic Bodies
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Group Neurons
Sensitive to sky blue when no blue, cause melotonin |
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Distance Vision = (Relaxed or Contracted lens?)
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Relaxed
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Aqueous Fluid
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Clear, In front
Feeds Cornea & Lens (?) |
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Vitreous Fluid
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Yellow/Brown
In back Amount = eye pressure |
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Field of Vision (in Degrees)
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190 Degrees
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Binocular Vision
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2 Eyes
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Stereoscopic
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Use 2 eyes to create 3D image
= Depth perception |
