wire

muscle

the brain

nerve

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

stem cells

skin cells

muscle cells

liver cells

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

muscle cells

glial cells

prison cells

stem cells

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

10 years

1 year

1 month

100 years

telegraph

electrical impulses

proteins

hormonal

spinal cord

brains

all of the above

a nerve