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