they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

glial cells

prison cells

muscle cells

stem cells

1 meter per second

1 foot per second

150 meters per second

100 miles per hour

skin cells

stem cells

liver cells

muscle cells

spinal cord

brains

all of the above

a nerve

the brain

nerve

muscle

wire

bipolar neurons

pyramidal neurons

multipolar neurons

Purkinje neurons

hormonal

proteins

telegraph

electrical impulses

10 years

100 years

1 month

1 year