Sense of Sight

What is the 1st step in sending a message (signal) into your eye?

• the cornea focuses the light through the pupil

• light enters the eye through the cornea

• The lens is behind the iris, it moves the light to the retina

• the pupil size is controlled by the iris (colour part of your eye)

What is the 2nd step in sending a message (signal) into your eye?

• the cornea focuses the light through the pupil

• light enters the eye through the cornea

• The lens is behind the iris, it moves the light to the retina

• the pupil size is controlled by the iris (colour part of your eye)

What is the 3rd step in sending a message (signal) into your eye?

• the cornea focuses the light through the pupil

• light enters the eye through the cornea

• The lens is behind the iris, it moves the light to the retina

• the pupil size is controlled by the iris (colour part of your eye)

What is the 4th step in sending a message (signal) into your eye?

• the cornea focuses the light through the pupil

• light enters the eye through the cornea

• Light travels through then lens to the retina through the vitreous humor

• the pupil size is controlled by the iris (colour part of your eye)

What is the 5th step in sending a message (signal) into your eye?

• The retina has receptor cells called rod and cones

• light enters the eye through the cornea

• Light travels through then lens to the retina through the vitreous humor

• the pupil size is controlled by the iris (colour part of your eye)

Rod cells in the retina...

• function in bright light (colour images)

• function in low levels of light (black and white images)

Cone cells in the retina...

• function in bright light (colour images)

• function in low levels of light (black and white images)

What is the 6th step in sending a message (signal) into your eye?

• The retina has receptor cells called rod and cones

• light enters the eye through the cornea

• Rod and cone cells send action potentials by the optic nerves to the brain

• the pupil size is controlled by the iris (colour part of your eye)

What is the 7th step in sending a message (signal) into your eye?

• The retina has receptor cells called rod and cones

• light enters the eye through the cornea

• Rod and cone cells send action potentials by the optic nerves to the brain

• The brain understands the signal and makes an image