nervous system Flashcards
1
Q
axon terminal
A
the button-like endings of axons through which axons make contact with other nerve cells.
2
Q
axon
A
passageway for nerve impulses after cell body; end in axon terminal
3
Q
myelin
A
insulates the axon. Produced by the Schwann cells
4
Q
node of ranvier
A
impulses jump from node to node, which increase speed of impulse
5
Q
schwann cells
A
the main glial cells of the peripheral nervous system
6
Q
soma
A
body of the neuron that holds the nucleus
7
Q
dendrite
A
receive the nerve impulses from the senses or another neuron
8
Q
neurons
A
make up 10% of the nervous system
9
Q
neuroglia
A
make up 90% of the nervous system
10
Q
major organs
A
brain,spinal cord,senses,nerves
11
Q
nervous system functions
A
to detect impulses from the senses; control center of the body
