External Structure of the Eye Flashcards
1
Q
Eyelash
A
Protection fom dirt and dust
2
Q
Lacrimal gland
A
Secretes tear fluid
3
Q
Eyelid
A
Blinking spreads tear fluid across conjunctiva (lysozyme and lubrication).
Protection from physical damage and bright light.
4
Q
Iris
A
Circular and radial muscles control the amount of light entering the eye by controlling the size of the pupil.
5
Q
Pupil
A
Hole in the iris.
6
Q
Naso-lacrimal duct
A
Drains tear fluid into the nasal cavity.
