they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

prison cells

glial cells

stem cells

muscle cells

telegraph

hormonal

electrical impulses

proteins

wire

muscle

the brain

nerve

1 year

10 years

100 years

1 month

muscle cells

skin cells

liver cells

stem cells

1 meter per second

1 foot per second

100 miles per hour

150 meters per second

a nerve

brains

spinal cord

all of the above

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons