100 miles per hour

1 meter per second

150 meters per second

1 foot per second

muscle cells

liver cells

stem cells

skin cells

stem cells

muscle cells

glial cells

prison cells

proteins

hormonal

telegraph

electrical impulses

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

a nerve

all of the above

brains

spinal cord

10 years

100 years

1 year

1 month

the brain

wire

nerve

muscle

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons