The eyes

8 important questions on The eyes

Where are the tear glands located?

under upper lids, tear fluid

How do tears drain away from the eye?

via tear ducts

Of which three layers is the wall of an eyeball made up?

outermost: sclera
MIddle : choroid
Inner:  retina
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What is part of the outerlayer aswell?

cornea

How does the vitreous body keep the retina in place?

by pressing it against the choroid

What is the pupillary light reflex?

it determines how much light enter the eye

What layers of mucles does the Iris ontain?

circular muscles  and radial muscles

What happens with muscles in dark room?

radial muscles contract, dilates to allow more light.

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