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