wire

nerve

the brain

muscle

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

all of the above

brains

spinal cord

a nerve

telegraph

hormonal

proteins

electrical impulses

stem cells

prison cells

glial cells

muscle cells

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons

muscle cells

liver cells

skin cells

stem cells

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

they regenerate very quickly

1 year

1 month

100 years

10 years