10 years

1 month

100 years

1 year

hormonal

proteins

telegraph

electrical impulses

stem cells

skin cells

liver cells

muscle cells

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

a nerve

all of the above

brains

spinal cord

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons

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

they regenerate very quickly

muscle

wire

nerve

the brain

stem cells

prison cells

glial cells

muscle cells