100 miles per hour

1 meter per second

1 foot per second

150 meters per second

liver cells

skin cells

stem cells

muscle cells

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

nerve

wire

the brain

muscle

hormonal

telegraph

proteins

electrical impulses

stem cells

muscle cells

glial cells

prison cells

brains

spinal cord

all of the above

a nerve

10 years

100 years

1 year

1 month