Monday, November 5, 2007

Basic Nervous System Anatomy Worksheet

1. What does CNS and PNS stand for?

CNS stands for Central Nervous System and PNS stands for Peripheral Nervous System.

2. What are the parts of the CNS?

The brain and the spinal cord.

3. Describe something that you do on a regular basis that your PNS controls.

The PNS controls stuff like digestion and heartbeat.

4. What are the two divisions of the autonomic nervous system and what does each control?


Sympathetic- controls the body in times of stress, fear, worry, and emergency.

Parasympathetic- brings the body to a normal state and allows for rest and relaxation to occur.


5. What are the three main types of neurons? What is the function of each?

Sensory neuron- conducts signals of pain and any other of the five senses.



Motor neuron- controls motor functions e.g. moving.



Interneuron- transmits signals to motor neurons.

6. What is the function of the axon of a nerve cell? The dendrite?

The axon is the nerve structure that sends signals and the dendrites receive signals

7. What is a synapse?

A synapse is the jumping or sparking of a neural impulse from one neuron to another.

8. Sketch a neuron and label the axon and the dendrite.



1 comment:

Duval said...

Nice. I love how you do your drawings.