Unit 4 Review

How might the cat's sense of smell help it survive?

• The scent of a mouse causing it to hunt

• The shape of a mouse causing it to hunt

• The shape of a dog causing it to hunt

• The scent of a dog causing it to hunt

Something in the environment that causes a living thing to respond is a...

• stimulus

• perception

The brain is part of which system?

• circulatory system

• central nervous system

• peripheral nervous system

• digestive system

An action or movement of the body that happens automatically as a reaction to something.

• reflex

• peripheral nerve

A nerve that is not part of the central nervous system and receives sensory information

• spinal cord

• peripheral nerve

Part of the nervous system that is made up of the brain and spinal cord.

• central nervous system

• nervous system

Interprets information from the nervous system and controls muscle movement.

• spinal cord

• brain

Moves information to and from the brain and peripheral nerves

• spinal cord

• brain

Which are directly connected to the peripheral nerves?

Select all that apply

• skin

• tongue

• brain

• nose

Which structure is at the back of the human eye where light through the lens is focused?

• cornea

• pupil

• retina

• rod