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