stem cells

liver cells

muscle cells

skin cells

100 years

10 years

1 month

1 year

the brain

nerve

wire

muscle

all of the above

brains

spinal cord

a nerve

prison cells

glial cells

stem cells

muscle cells

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

electrical impulses

telegraph

proteins

hormonal

1 foot per second

150 meters per second

1 meter per second

100 miles per hour