1 foot per second

150 meters per second

1 meter per second

100 miles per hour

nerve

wire

the brain

muscle

stem cells

skin cells

muscle cells

liver cells

100 years

10 years

1 year

1 month

electrical impulses

hormonal

telegraph

proteins

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons

a nerve

brains

spinal cord

all of the above

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

prison cells

muscle cells

stem cells

glial cells