all of the above
brains
spinal cord
a nerve
stem cells
liver cells
skin cells
muscle cells
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
hormonal
proteins
telegraph
electrical impulses
150 meters per second
1 meter per second
100 miles per hour
1 foot per second
nerve
muscle
the brain
wire
prison cells
glial cells
10 years
1 year
1 month
100 years
bipolar neurons
Purkinje neurons
multipolar neurons
pyramidal neurons
True or False: Damage to your nervous system can cause paralysis.