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

liver cells

stem cells

skin cells

muscle cells

nerve

wire

the brain

muscle

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

proteins

telegraph

hormonal

electrical impulses

stem cells

prison cells

glial cells

muscle cells

100 miles per hour

150 meters per second

1 meter per second

1 foot per second

a nerve

spinal cord

brains

all of the above

10 years

100 years

1 year

1 month