liver cells

muscle cells

skin cells

stem cells

hormonal

proteins

telegraph

electrical impulses

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

a nerve

spinal cord

brains

all of the above

100 years

10 years

1 year

1 month

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

1 meter per second

1 foot per second

100 miles per hour

150 meters per second

prison cells

muscle cells

stem cells

glial cells

the brain

nerve

wire

muscle