1 foot per second

100 miles per hour

150 meters per second

1 meter per second

brains

spinal cord

a nerve

all of the above

telegraph

hormonal

electrical impulses

proteins

the brain

wire

nerve

muscle

liver cells

skin cells

muscle cells

stem cells

1 year

100 years

10 years

1 month

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

they regenerate very quickly

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

prison cells

stem cells

glial cells

muscle cells