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