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 TWO parts of the nervous system make up the central nervous system?

• Brain

• Sensory organs

• Spinal Cord

• Nerves

What are the TWO parts of the peripheral (outer) nervous system?

• Brain

• Sensory Organs

• Spinal Cord

• Nerves

What does the autonomic nervous system control?

• All voluntary actions

• All involuntary actions

What are the three parts of the nervous system?

• brain, spinal cord, nerves

• brain, lungs, spinal cord

• heart, brain, nerves

• brain, nerves, neurons

A nerve cell is called a:

• neutron

• nerve

• neuron

• synapse

Dendrites are part of a neuron that carries electrical signals _______ the cell body.

• to

• away

• in between

Axons are part of a neuron that send electrical signals ________ the cell body

• to

• away from

• in between

True or False: the cell body of a neuron has a nucleus.

• True

• False