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