100 miles per hour

1 meter per second

150 meters per second

1 foot per second

prison cells

muscle cells

glial cells

stem cells

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

100 years

1 month

1 year

10 years

a nerve

all of the above

spinal cord

brains

the brain

muscle

wire

nerve

skin cells

liver cells

stem cells

muscle cells

bipolar neurons

pyramidal neurons

multipolar neurons

Purkinje neurons

hormonal

electrical impulses

proteins

telegraph