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