nervous system Flashcards
1
Q
what is the purpose of the nervous system?
A
detect changes in the environment (stimuli)
2
Q
what does the nervous system include?
A
a. the central nervous system (consisting of the brain and the spinal cord)
b. the peripheral nervous system - a network of nerves which link to the central nervous system up to sense organs (receptors) and muscles and glands (effectors)
3
Q
what are receptors?
A
a. cells that can detect stimuli
4
Q
what is a reflex arc?
A
a nerve pathway which produces a fast, simple automatic response when it is stimulated
