proteins

electrical impulses

telegraph

hormonal

skin cells

stem cells

liver cells

muscle cells

the brain

wire

nerve

muscle

10 years

1 year

1 month

100 years

spinal cord

a nerve

all of the above

brains

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons

muscle cells

stem cells

glial cells

prison cells

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

they do not have a nucleus

1 meter per second

1 foot per second

150 meters per second

100 miles per hour