telegraph
hormonal
proteins
electrical impulses
stem cells
glial cells
muscle cells
prison cells
skin cells
liver cells
muscle
the brain
nerve
wire
1 foot per second
100 miles per hour
150 meters per second
1 meter per second
they regenerate very quickly
they help carry oxygen to different parts of your body
they are very long compared to other cells in the body
they do not have a nucleus
pyramidal neurons
bipolar neurons
multipolar neurons
Purkinje neurons
all of the above
a nerve
brains
spinal cord
100 years
1 year
1 month
10 years
True or False: Damage to your nervous system can cause paralysis.