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