spinal cord

all of the above

a nerve

brains

stem cells

glial cells

prison cells

muscle cells

wire

the brain

nerve

muscle

muscle cells

skin cells

stem cells

liver cells

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

hormonal

proteins

telegraph

electrical impulses

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

1 month

1 year

10 years

100 years