10 years

100 years

1 month

1 year

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

stem cells

muscle cells

skin cells

liver cells

wire

muscle

the brain

nerve

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

telegraph

hormonal

electrical impulses

proteins

stem cells

glial cells

prison cells

muscle cells

a nerve

spinal cord

brains

all of the above