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