DRA: The Nervous System

SECTION: The Nervous System

TWO SYSTEMS WITHIN A SYSTEM

CNS=Central Nervous System

What is the central nervous system?

• The CNS is the spinal cord only which controls the body by itself.

• The CNS is the brain only which controls your body by itself.

• The CNS is the brain and spinal cord which is the control center for your body.

• The CNS is the nerves and neurons which control the body.

PNS=Peripheral Nervous System

CNS=Central Nervous System

What is the peripheral nervous system?

• The PNS is all parts of the CNS EXCEPT brain and spinal cord.

• The PNS is all parts of the CNS.

• The PNS is none of the CNS.

• The PNS is always the same.

Mark the following statement if it is part of the PNS or CNS.

includes nerves

• Peripheral Nervous System

• Central Nervous System

Mark the following statement if it is part of the PNS or CNS.

acts as the control center for your body

• Peripheral Nervous System

• Central Nervous System

Mark the following statement if it is part of the PNS or CNS.

includes your brain and spinal cord

• Peripheral Nervous System

• Central Nervous System

Mark the following statement if it is part of the PNS or CNS.

connects all areas of your body to the brain and spinal cord

• Peripheral Nervous System

• Central Nervous System

The Peripheral Nervous System

Nerve cells specialized to receive and conduct electrical impulses are called

• impulses.

• neurons.

• special.

• conducive.

Electrical messages, called _______, may travel as fast as 150 m/s or as slow as 0.2 m/s.

• impulses

• neurons

• axon terminals

• conducive

allows the neuron to receive information

• cell body

• dendrite

• axon

has branches that allow information to pass to other cells

• cell body

• dendrite

• axon