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

liver cells

skin cells

stem cells

muscle cells

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

stem cells

muscle cells

prison cells

glial cells

nerve

the brain

muscle

wire

1 year

10 years

100 years

1 month

electrical impulses

hormonal

proteins

telegraph

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons

spinal cord

brains

all of the above

a nerve