stem cells

skin cells

liver cells

muscle cells

wire

muscle

nerve

the brain

1 year

1 month

10 years

100 years

hormonal

electrical impulses

telegraph

proteins

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

stem cells

muscle cells

glial cells

prison cells

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons

spinal cord

a nerve

brains

all of the above