they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

muscle

nerve

wire

the brain

1 meter per second

100 miles per hour

1 foot per second

150 meters per second

liver cells

muscle cells

stem cells

skin cells

10 years

1 year

100 years

1 month

hormonal

proteins

electrical impulses

telegraph

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

muscle cells

glial cells

stem cells

prison cells

all of the above

brains

a nerve

spinal cord