wire

the brain

muscle

nerve

liver cells

stem cells

skin cells

muscle cells

1 year

1 month

10 years

100 years

1 foot per second

150 meters per second

1 meter per second

100 miles per hour

all of the above

brains

spinal cord

a nerve

proteins

electrical impulses

telegraph

hormonal

Purkinje neurons

bipolar neurons

pyramidal neurons

multipolar neurons

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

they regenerate very quickly

prison cells

glial cells

muscle cells

stem cells