100 miles per hour

1 meter per second

1 foot per second

150 meters per second

stem cells

muscle cells

liver cells

skin cells

glial cells

prison cells

muscle cells

stem cells

a nerve

all of the above

brains

spinal cord

1 year

1 month

10 years

100 years

the brain

wire

muscle

nerve

hormonal

proteins

electrical impulses

telegraph

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly