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

proteins

electrical impulses

hormonal

telegraph

stem cells

prison cells

glial cells

muscle cells

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

brains

spinal cord

all of the above

a nerve

muscle cells

skin cells

liver cells

stem cells

1 month

100 years

10 years

1 year

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

wire

nerve

muscle

the brain