a: nerve cell ~
b: a long thin wire
What:
"A nerve cell is like a long thin wire. The nerve cell carries an electrical signal from one end to another, like a wire. If I touch a hot stove with my finger, a signal is initiated. That signal travels up my arm until it hits the end of the cell. At the end of the cell is a small space. "
Useful?
Writer: Not Stated
LCC:
Where:
Date: Feb 22 2014 8:44 PM
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