1 foot per second

150 meters per second

1 meter per second

100 miles per hour

spinal cord

all of the above

brains

a nerve

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

liver cells

muscle cells

skin cells

stem cells

wire

muscle

nerve

the brain

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

telegraph

proteins

hormonal

electrical impulses

glial cells

muscle cells

prison cells

stem cells

1 year

1 month

100 years

10 years