150 meters per second

1 foot per second

100 miles per hour

1 meter per second

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

stem cells

liver cells

muscle cells

skin cells

electrical impulses

hormonal

proteins

telegraph

all of the above

spinal cord

brains

a nerve

muscle cells

stem cells

prison cells

glial cells

wire

nerve

muscle

the brain

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

10 years

1 month

100 years

1 year