1 foot per second

1 meter per second

150 meters per second

100 miles per hour

telegraph

proteins

hormonal

electrical impulses

muscle cells

skin cells

liver cells

stem cells

muscle

wire

nerve

the brain

10 years

1 month

100 years

1 year

stem cells

muscle cells

prison cells

glial cells

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

brains

all of the above

a nerve

spinal cord

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body