10 years

100 years

1 month

1 year

1 meter per second

100 miles per hour

150 meters per second

1 foot per second

the brain

muscle

wire

nerve

muscle cells

skin cells

liver cells

stem cells

prison cells

stem cells

glial cells

muscle cells

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

electrical impulses

hormonal

telegraph

proteins

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

all of the above

brains

a nerve

spinal cord