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Questions and Answers
What does the orbital region contain?
What does the orbital region contain?
- Eyeballs, associated muscles, nerves, vessels, and fat (correct)
- Only the eyeballs
- Eyeballs and associated muscles
- Eyeballs and nerves
What is the palpebral fissure?
What is the palpebral fissure?
- The mucous membrane covering the deep surface of the eyelids
- The short, curved hairs on the free edges of the eyelids
- The movable folds guarding the orbital opening
- The elliptical opening between the eyelids (correct)
Where do the sebaceous glands open?
Where do the sebaceous glands open?
- Directly into the eyelash follicles (correct)
- Into the palpebral fissure
- Into the lacrimal apparatus
- Into the conjunctival sac
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Study Notes
Eye Structure
- The orbital region contains the eyeball, extraocular muscles, nerves, and blood vessels.
- The palpebral fissure is the opening between the upper and lower eyelids.
- Sebaceous glands open into the hair follicles of the eyelids, producing sebum that helps to lubricate the eyes.
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