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