Nervous System

The nervous system is composed of the ___, ___, and ___.

• brain, spinal cord, nerves

• lungs, liver, stomach

• eyes, pancreas, veins

• heart, brain, kidneys

The CENTRAL nervous system is made up of which two organs?

• Peripheral Nerves and Heart

• Brain and Spinal Cord

• Spinal Cord and Peripheral Nerves

• Heart and Lungs

What kind of cell is this?

• 
  A muscle cell

• A neurone

• A skin cell

• 
  A receptor

Which statement best describes a reflex arc?

• Slow response that you have to think about

• Rapid response to protect body from harm

Where would the nerve impulse start in this reflex arc?

• C

• E

• D

• A

_____ neurons carry messages away from the central nervous system and out to muscles or glands. The RED neuron in diagram.

• sensory

• inter

• motor

• central

Without the nervous system, you couldn't

• walk

• 
  think

• breathe

• all of the above

The red part of the picture shows the ________ which is part of the nervous system.

• peripheral nerves

• neurons

• 
  spinal cord

• brain

The nerve impulse is a chemical that travels in the bloodstream.

• True

• False

What is the chemical used by a neuron to transmit an impulse across a synapse to another nerve cell?

• Synapse

• Threshold

• Neurotransmitters

• Impulse