Unit 4: Vision

What part of your eye sends the messages to and from your brain?

• retina
• optic nerve
• iris
• vitreous humor

What is the pupil?

• Dot
• Hole
• Muscle
• Organ

What part of your eye is a muscle?

• iris
• sclera
• pupil
• retina

What are the two jobs of a lens?

• focus and magnify
• focus and flip
• focus and see
• flip and see

When we see white light, such as sunlight, what colors are we seeing.

• None
• All of the colors
• Opaque
• White

What is the job of the pupil?

• to let light enter the eye
• carry signals from the retina to the brain
• protect the eye
• to see colors

What is the job of the lens?

• To protect the eye
• to open or shrink the pupil
• let light into the eye
• focuses the light onto the retina at the back of the eye

The innermost sensory layer of the eye that contains photoreceptors 

• Choroid
• Retina
• Sclera
• Cornea

What is the function of the retina?

• bend light so that our eyes are able to adjust in various settings.
• control the movement of our eyes. 
• sends impulses to the brain for visual recognition. 
• protect the eye from bacteria and debris. 

Photoreceptors that detect color are called..

• Cones
• Rods