Nervous system

What is the main function of the nervous system?

• to inhale oxygen and exhale carbon dioxide

• to break down food consumed by a person for nutrients

• to control the body's activities by relaying messages

• to control the body's movements

What are the two divisions of the nervous system?

• Central and Lower nervous systems

• Central and Peripheral nervous systems

• Lower and Cerebral nervous systems

• Central and Muscular nervous systems

What are the three parts of the nervous system?

• brain, spinal cord, nerves

• brain, lungs, spinal cord

• heart, brain, nerves

• brain, nerves, neurons

Our ______ receive messages and send them to the brain. The brain sends messages to our body on how to respond.

• heart

• lungs

• nerves

Without the Nervous System, you couldn't...

• walk

• breathe

• think

• all of the above

When you react to catch a dropped ruler your body reacts in this order:

• 1) muscles contract 2) eyes sense ruler move 3) message sent to brain 4) message sent to the muscles
• 1) message sent to muscles 2) muscles contract 3) message sent to brain 4) eyes sense ruler move
• 1) eyes contract 2) muscles sent to brain 3) message sense moves 4) ruler is sent to muscles
• 1) eyes sense ruler move 2) message sent to brain 3) message sent to muscles 4) muscles contract

All parts of the nervous system except for the brain and spinal cord

• nerves

• neuron

• central nervous system

• peripheral nervous system

What does the all or none principle refer too ?