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