wire

muscle

the brain

nerve

telegraph

proteins

hormonal

electrical impulses

10 years

100 years

1 month

1 year

stem cells

liver cells

skin cells

muscle cells

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

stem cells

muscle cells

prison cells

glial cells

a nerve

brains

spinal cord

all of the above

bipolar neurons

pyramidal neurons

multipolar neurons

Purkinje neurons

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

they do not have a nucleus