they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

prison cells

glial cells

muscle cells

stem cells

10 years

100 years

1 year

1 month

spinal cord

brains

all of the above

a nerve

skin cells

muscle cells

stem cells

liver cells

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

nerve

wire

the brain

muscle

100 miles per hour

1 meter per second

150 meters per second

1 foot per second

hormonal

proteins

electrical impulses

telegraph