The Sensory And Nervous System

Question 1

What are the 3 main layers of the eye?

Answer 1

Sclera, choroid and retina

Question 2

What is the function of the sclera?

Answer 2

Protection

Question 3

What is the function of the choroid?

Answer 3

To stop light from bouncing around the eye

Question 4

What is the function of the retina?

Answer 4

Contains the light receptor cells and nerves

Question 5

What is the function of the iris?

Answer 5

Controls the amount of light entering the eye

Question 6

What is the function of the lens?

Answer 6

Focuses light onto the retina

Question 7

What is the function of the optic nerve?

Answer 7

Carries nerve impulses from the eye to the brain

Question 8

What is the function of the pupil?

Answer 8

Allows light to enter the eye

Question 9

What is the function of the ciliary muscle?

Answer 9

Changes the shape of the lens

Question 10

What is the function of the cornea?

Answer 10

Allows light into the eye and bends the light rays

Question 11

What does the central nervous system consist of?

Answer 11

The brain and the spinal cord

Question 12

Give 3 roles of the brain

Answer 12

Receive information from the sense organs
Send a response to the muscles and glands
Be responsible for memory, intelligence and emotions

Question 13

What is the function of sensory nerves?

Answer 13

To carry impulses to the brain and spinal cord - the optic nerve is a sensory nerve

Question 14

What is the function of motor nerves?

Answer 14

To carry impulses from the brain and spinal cord to the muscles and glands