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