10 years

100 years

1 year

1 month

skin cells

stem cells

muscle cells

liver cells

telegraph

electrical impulses

hormonal

proteins

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

brains

a nerve

spinal cord

all of the above

wire

nerve

the brain

muscle

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

prison cells

stem cells

glial cells

muscle cells