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