10 years

100 years

1 year

1 month

muscle

nerve

the brain

wire

1 meter per second

100 miles per hour

150 meters per second

1 foot per second

a nerve

brains

spinal cord

all of the above

hormonal

proteins

telegraph

electrical impulses

liver cells

stem cells

skin cells

muscle cells

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

stem cells

glial cells

muscle cells

prison cells