stem cells

skin cells

liver cells

muscle cells

muscle cells

glial cells

prison cells

stem cells

electrical impulses

proteins

hormonal

telegraph

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

10 years

100 years

1 year

1 month

the brain

nerve

muscle

wire

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

brains

a nerve

all of the above

spinal cord

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons