they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

muscle

wire

nerve

the brain

10 years

100 years

1 year

1 month

stem cells

muscle cells

prison cells

glial cells

brains

all of the above

a nerve

spinal cord

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

stem cells

skin cells

liver cells

muscle cells

hormonal

telegraph

proteins

electrical impulses