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