spinal cord

brains

a nerve

all of the above

hormonal

electrical impulses

telegraph

proteins

stem cells

skin cells

muscle cells

liver cells

10 years

100 years

1 year

1 month

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons

wire

nerve

the brain

muscle

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

1 meter per second

100 miles per hour

150 meters per second

glial cells

stem cells

muscle cells

prison cells