10 years

100 years

1 month

1 year

muscle

nerve

wire

the brain

liver cells

muscle cells

skin cells

stem cells

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

glial cells

muscle cells

prison cells

stem cells

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

telegraph

electrical impulses

proteins

hormonal

brains

all of the above

spinal cord

a nerve

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons