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