the brain

nerve

wire

muscle

proteins

electrical impulses

hormonal

telegraph

skin cells

liver cells

stem cells

muscle cells

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

stem cells

glial cells

muscle cells

prison cells

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

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

10 years

1 year

1 month

100 years

a nerve

brains

spinal cord

all of the above