they regenerate very quickly
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
muscle
the brain
nerve
wire
True or False: Damage to your nervous system can cause paralysis.
a nerve
spinal cord
all of the above
brains
multipolar neurons
Purkinje neurons
pyramidal neurons
bipolar neurons
glial cells
muscle cells
prison cells
stem cells
proteins
hormonal
telegraph
electrical impulses
1 year
10 years
100 years
1 month
liver cells
skin cells
150 meters per second
100 miles per hour
1 foot per second
1 meter per second