1 foot per second

150 meters per second

1 meter per second

100 miles per hour

all of the above

a nerve

brains

spinal cord

stem cells

liver cells

skin cells

muscle cells

electrical impulses

proteins

telegraph

hormonal

muscle

the brain

wire

nerve

1 year

1 month

10 years

100 years

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

glial cells

muscle cells

stem cells

prison cells