they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

1 year

100 years

1 month

10 years

liver cells

stem cells

muscle cells

skin cells

all of the above

a nerve

brains

spinal cord

stem cells

prison cells

muscle cells

glial cells

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

proteins

hormonal

telegraph

electrical impulses

wire

muscle

nerve

the brain

1 meter per second

1 foot per second

100 miles per hour

150 meters per second