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