150 meters per second

100 miles per hour

1 meter per second

1 foot per second

all of the above

brains

spinal cord

a nerve

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons

nerve

the brain

wire

muscle

electrical impulses

hormonal

proteins

telegraph

muscle cells

liver cells

skin cells

stem cells

muscle cells

glial cells

stem cells

prison cells

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

10 years

1 year

1 month

100 years