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Psychology 6.1

SS 111
Across
The chemicals released by neurons which determine the rate at which other neurons fire
The brain and the spinal cord
Nerves branching out from the spinal column
The long, thin cells of nerve tissue along which messages travel to & from the brain
Down
A column of nerves within the spine that transmits messages to and from the brain
The part of the peripheral nervous system that controls internal biological functions
The part of the peripheral nervous system that controls voluntary movement of skeletal muscles
The gap that exists between neurons (individual nerve cells)