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