they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

proteins

hormonal

telegraph

electrical impulses

10 years

100 years

1 year

1 month

100 miles per hour

1 meter per second

150 meters per second

1 foot per second

muscle

the brain

wire

nerve

skin cells

muscle cells

liver cells

stem cells

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

brains

spinal cord

all of the above

a nerve

stem cells

muscle cells

prison cells

glial cells