100 miles per hour

1 meter per second

1 foot per second

150 meters per second

spinal cord

brains

all of the above

a nerve

skin cells

liver cells

stem cells

muscle cells

100 years

1 year

10 years

1 month

hormonal

telegraph

proteins

electrical impulses

stem cells

glial cells

prison cells

muscle cells

pyramidal neurons

multipolar neurons

bipolar neurons

Purkinje neurons

wire

nerve

the brain

muscle

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

they regenerate very quickly