Thursday, March 6, 2008

Basic Nervous SYstem Anatomy


1)What does CNS and PNS stand for? Central Nervous System and Peripheral Nervous System!
2)What are the parts of the CNS? brain and spiral cord and it controls thinking, memory and behavior.
3)Describe something that you do on a regular basis that your PNS controls. carry messages through out the body.
4)What are the two divisions of the autonomic nervous system and what does each control? Sympathetic branch controls the body in times of stress, worry, fear,and emergency. Parasympatic branch brings the body back to a normal state and allows for rest and relaxation to occur.
5)What are the three main types of neurons? sensory neuron, motor neuron, and interneuron! What is the function of each? interneuron only conducts within the CNS. motor neurons takes the impulse from the CNS to the foot for actions. sensory neuron conduct the impulse from the foot to the CNS.
6)What is the function of the axon of a nerve cell? The dendrite?
7)What is a synapse? simply the conduction of an impulse from one neuron to another.
-Sketch a neuron and label the axon and the dendrite. (above)

1 comment:

Duval said...

Good, but missing the answer to number 6.