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Anatomy
Parts of the eye
| Question | Answer |
|---|---|
| Adnexa | Eyelids, eyelashes (cilia), Lacrimal gland (tear gland) extraocular muscles |
| Lateral Rectus | pulls the eye outward, essential for horizontal movement |
| Medial Rectus | Turns |
| Levator muscle | Elevates the upper eyelid |
| Oricularis oculi | muscle involved in blinking and closure |
| Palpebral fissure | space between the upper and lower eyelids when they are open |
| Superior rectus | moves the eye up |
| Superior Oblique | rotates eye down and in |
| Medial/internal rectus | moves the eye in (towards the nose) |
| Later/external rectus | moves the eye out (away from the nose) |
| Inferior rectus | moves the eye down |
| Inferior oblique | rotates the eye up and in |
| Anterior chamber | space in front of the iris and behind the cornea. Aqueous humor flows in and out |
| Aqueous humor | watery substances which aids in keeping the cornea moist, source of nutrients to the cornea, maintains interoccular pressure |
| choriod | layer in the eye filled with blood vessels that feeds the retina |
| Cones | are in the retina and responsible for day vision, detail and color |
| Descemet’s Membrane | the basement membrane of the cornea composed of collagen |
| Endothelium: | The cornea’s inner layer of cells that help remove extra fluid from the cornea |
| Epithelium | The cornea’s outer layer of cells which is highly regenerative |
| Fibrous tunic: | The outer layer of the eye which is considered the protective layer and consists of the sclera, cornea, and limbus |
| Fovea centralis | A depression in the retina that contains only cones (not rods), and that provides acute eyesight |
| Geniculate body | Part of the brain that transmits visual impulses from the thalami to the visual cortex |
| Macula | The small, sensitive area of the central retina, providing vision for fine work and reading |
| Neural tunic | The inner layers of the eye where light gets converted into electrical impulses in order to be sent to the brain. This layer consists of the retina, which includes the macula, fovea, optic disc, and vitreous humor |
| Posterior chamber: | Filled with aqueous fluid, the space between the back of the iris and the lens |
Created by:
Joaniewhite