Sight & Eyes

This part of the eye changes light into electrical signals.

• vision
• dermis
• retina

The pupil is...

• a black dot that lets light in.
• produces tears.
• a type of acne.

These things in your eyes help keep them moist. 

• tear glands
• lens
• analogy

An elbow is a hinge, as an eye is to a ________.

• computer
• door
• camera

Which of the following is/are true?

• Skin is the largest organ.
• Sweat glands help keep us cool.
• Shivering helps keep us warm.  
• All of the above