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