nervous systems basics Flashcards
1
Q
function of nervous system
A
- receive stimuli (information)
- and send a response
2
Q
what does CNS stand for
A
central nervous system
(brain + spinal cord)
3
Q
what does PNS stand for
A
peripheral nervous system
(all nerves which move signals to and from CNS)
4
Q
what is a neuron
A
cells that carry the signal
5
Q
what are neuroglial cells
A
support cells
-deliver nutrients
-remove waste
-structural support
-defend
-insulate the neuron (mainly axon) which allows the signal to travel faster
6
Q
cell body
A
biosynthetic center of the neuron containing the nucleus and many of the organelles
7
Q
axon
A
carries action potential toward another cell
8
Q
dendrites
A
receive signals from other neurons but are not capable of generating action potentials
9
Q
axon terminal (synaptic bulb)
A
sends signal to other cells
10
Q
nodes of Ranvier
A
allows signal to jump (faster)
