Unit 1 Mystery Science: Human Body as a Machine

Front

What allows nocturnal animals to see easily at night?

Back

Their eyes have very large pupils that let in a lot of light.

Front

What are the 'strings' that attach to the bones in a human body?

Back

Tendons.

Front

What is the dark spot in the middle part of the eye?

Back

A hole.

Front

Where does light enter the eye?

Back

The pupil.

Front

What happens to the pupil when a bright light hits it?

Back

The pupil gets smaller.

Front

What is the function of tendons in the human body?

Back

They connect muscles to bones.

Front

What is the role of the pupil in the eye?

Back

It controls the amount of light that enters the eye.

Front

What are ligaments?

Back

Tissues that connect bones to other bones.

Front

What is the iris?

Back

The colored part of the eye that surrounds the pupil.

Front

What is the retina?

Back

The part of the eye that receives light and sends signals to the brain.