liver cells

muscle cells

skin cells

stem cells

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

brains

all of the above

a nerve

spinal cord

muscle cells

stem cells

glial cells

prison cells

nerve

muscle

wire

the brain

10 years

1 month

1 year

100 years

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

hormonal

telegraph

electrical impulses

proteins

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus