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