100 miles per hour

150 meters per second

1 meter per second

1 foot per second

telegraph

electrical impulses

hormonal

proteins

100 years

1 month

10 years

1 year

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

a nerve

spinal cord

brains

all of the above

liver cells

stem cells

skin cells

muscle cells

nerve

the brain

wire

muscle

glial cells

muscle cells

prison cells

stem cells

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus