The Nervous System

Parts of the Nervous System

100

The part of the nervous system that serves internal organs.

spinal cord

200

Individual nerve cells are called...

neurons

300

The three parts of the nervous system are...

brain, spinal cord, nerves

400

The two main divisions of the nervous system are...

central nervous system and the peripheral nervous system

Parts of the Brain

100

The part of the brain that controls reasoning, memory, and senses.

cerebrum

200

By what is the brain protected?

skull

300

The three parts of the brain are...

cerebrum, cerebellum, brain stem

400

The _______________is responsible for coordinating movements and helping muscles work together.

cerebellum

Parts of a neuron

100

A neuron is....

a cell that can transfer an impulse

200

Dendrites are short branches of the neuron that carry impulses ____________the cell body.

toward

300

The three main parts of a neuron are... 

(a 4th for an extra p100 points)

cell body, dendrites, axons, & synapses.

400

The ___________is the gap between the sender of one nerve cell and the receiver of the other.

synapse

The Spine

100

By what is the spinal cord protected?

the spinal column or vertebrae

200

Between each vertebrae are....

spinal nerves

300

The top of the spinal cord is connected to the ...

brain stem

400

The ___________nerves go to various parts of the body.

spinal

How we react

100

An automatic reaction to a stimulus is a ...

reflex

200

Talking and swimming are ______________reactions.

voluntary

300

Breathing is a __________reaction.

involuntary

400

Why is it necessary for some information to be processed in the spinal cord rather than the brain?

These messages are urgent. A reaction is necessary to relieve pain.