stem cells

muscle cells

liver cells

skin cells

10 years

100 years

1 year

1 month

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

brains

spinal cord

a nerve

all of the above

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

muscle

nerve

the brain

wire

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

telegraph

proteins

hormonal

electrical impulses

glial cells

muscle cells

stem cells

prison cells