they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

proteins

telegraph

electrical impulses

hormonal

muscle cells

stem cells

prison cells

glial cells

spinal cord

a nerve

all of the above

brains

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

muscle cells

skin cells

stem cells

liver cells

the brain

nerve

wire

muscle

100 years

1 year

10 years

1 month