Chap 9: The Sensory System

Question 1

What is the function of the pupil?

Answer 1

Lets light into the eye

Question 2

What is the Iris?

Answer 2

The colored part of the eye

Question 3

What is the function of the Iris?

Answer 3

Controls the amount of light entering the eye

Question 4

What is the lens?

Answer 4

The area directly behind the pupil

Question 5

What is the function of the lens?

Answer 5

Focuses light on the retina

Question 6

What is the retina?

Answer 6

The part around the jelly-like fluid

Question 7

What is the function of the retina?

Answer 7

Absorbs light which allows us to see

Question 8

What is the optic nerve?

Answer 8

The nerve coming from the back of the eye

Question 9

What is the function of the optic nerve?

Answer 9

Carries messages from the eye to the brain (sensory nerve)

Question 10

What is the cornea?

Answer 10

The see-through part at the front of the eye

Question 11

What is the function of the cornea?

Answer 11

Allows light to enter the front of the eye

Question 12

What is the ciliary muscle?

Answer 12

The muscle at the side of the front of the eye

Question 13

What is the function of the ciliary muscle?

Answer 13

Changes the shape of the lens

Question 14

What are the sense organs and their senses?

Answer 14

Eye-sight
Ear-hearing
Nose-smell
Skin-touch
Tongue-taste

Question 15

What is a sensory nerve?

Answer 15

A nerve that carries messages from the sensory organ to the brain

Question 16

What is a motor nerve?

Answer 16

A nerve that carries messages from the brain to the organs

Question 17

What is the pupil?

Answer 17

A hole to the back of the eye

Question 18

Organs in the central nervous system

Answer 18

Brain

Spinal cord