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