10 years

1 year

100 years

1 month

150 meters per second

1 foot per second

100 miles per hour

1 meter per second

muscle cells

liver cells

skin cells

stem cells

hormonal

proteins

electrical impulses

telegraph

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

nerve

the brain

wire

muscle

prison cells

stem cells

muscle cells

glial cells

all of the above

brains

spinal cord

a nerve

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons