150 meters per second

1 meter per second

1 foot per second

100 miles per hour

telegraph

proteins

electrical impulses

hormonal

wire

muscle

nerve

the brain

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

liver cells

skin cells

muscle cells

stem cells

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

100 years

1 year

10 years

1 month

muscle cells

stem cells

glial cells

prison cells

spinal cord

brains

a nerve

all of the above