liver cells

muscle cells

skin cells

stem cells

1 month

100 years

1 year

10 years

hormonal

electrical impulses

telegraph

proteins

the brain

nerve

muscle

wire

100 miles per hour

150 meters per second

1 foot per second

1 meter per second

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

multipolar neurons

Purkinje neurons

bipolar neurons

pyramidal neurons

spinal cord

a nerve

all of the above

brains

glial cells

muscle cells

stem cells

prison cells