wire

muscle

nerve

the brain

stem cells

skin cells

liver cells

muscle cells

hormonal

telegraph

proteins

electrical impulses

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

1 month

1 year

10 years

100 years

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

muscle cells

stem cells

prison cells

glial cells

all of the above

spinal cord

a nerve

brains

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons