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

100 miles per hour

1 foot per second

150 meters per second

1 meter per second

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons

electrical impulses

telegraph

proteins

hormonal

stem cells

prison cells

glial cells

muscle cells

10 years

100 years

1 year

1 month

muscle

wire

nerve

the brain

brains

all of the above

spinal cord

a nerve

muscle cells

skin cells

stem cells

liver cells