Special Senses Flashcards
0
Q
What is the cornea?
A
Helps focus entering light rays
1
Q
What is the sclera?
A
- White protective membrane
2. Insertion of extrinsic muscles
2
Q
What are ciliary muscles?
A
- Hold lens in position
2. Adjusts lens
3
Q
What is the lens?
A
Adjusts shape to bend or refract light
4
Q
What is the iris?
A
Adjusts volume of light.
5
Q
What is the pupil?
A
Allows light to enter eye.
6
Q
What two things does the retina contain?
A
- Rods
2. Cones
7
Q
What do rods do?
A
Sight in dim-light, not colour.
8
Q
What do cones do?
A
Colour in light.
9
Q
What does the optic nerve do?
A
Relays information to the brain.
10
Q
Where is the tympanic membrane?
A
Between outer and middle ear.
11
Q
What does the tympanic membrane do?
A
Convert sound to mechanical movement.
