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