100 miles per hour

1 foot per second

1 meter per second

150 meters per second

the brain

nerve

wire

muscle

telegraph

electrical impulses

proteins

hormonal

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons

muscle cells

glial cells

stem cells

prison cells

muscle cells

liver cells

stem cells

skin cells

1 year

1 month

100 years

10 years

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

spinal cord

all of the above

a nerve

brains