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