What is a stimulus?

• Something that scares a person

• A cell that detects a change

• A change in the external or internal environment

• A response to a change in the body

Select all examples of stimuli

• Chemicals in food

• Light reflecting off an object

• Sound waves

• Temperature of a room

What tis the function of a receptor cell?

• Specialised cells that detect stimuli

• Specialised cells that carry an impulse to the brain

• Specialised cells that cause a change to happen in the body

• Specialised cells that process information and decide what the body will do

The function of the sensory neurone is to carry the impulse from the sensory organ to the central nervous system.

• True

• False

Examples of sensory organs include...

• Skin, ears, eyes

• Brain, ears, eyes

• Brain, muscles, eyes

• Glands, muscles, brain

Messages travel along neurones as...

• Chemicals

• Electrical impulses

What is a synapse?

• Part of a neurone

• Part of the brain

• The gap between neurones

How do impulses travel across a synapse?

• Chemicals diffuse across

• Electrical impulses pass across

What is the CNS?

• Central nervous system (brain and spinal cord)

• Continuous nervous system (brain and spinal cord)

• Controlling nervous station (brain and spinal cord)

• Coordination nervous system (brain and spinal cord)

What does the CNS do?

• Gathers information for memories

• Processes information and decides the response