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