100 miles per hour

1 foot per second

1 meter per second

150 meters per second

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

muscle cells

prison cells

glial cells

stem cells

10 years

1 year

100 years

1 month

nerve

wire

muscle

the brain

all of the above

a nerve

spinal cord

brains

liver cells

muscle cells

skin cells

stem cells

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

telegraph

proteins

hormonal

electrical impulses