liver cells

stem cells

muscle cells

skin cells

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

bipolar neurons

pyramidal neurons

multipolar neurons

Purkinje neurons

electrical impulses

proteins

telegraph

hormonal

the brain

muscle

wire

nerve

they do not have a nucleus

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

all of the above

brains

a nerve

spinal cord

glial cells

prison cells

muscle cells

stem cells

10 years

100 years

1 year

1 month