wire

muscle

nerve

the brain

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

stem cells

muscle cells

glial cells

prison cells

liver cells

muscle cells

stem cells

skin cells

proteins

hormonal

telegraph

electrical impulses

1 year

1 month

100 years

10 years

all of the above

spinal cord

a nerve

brains

they regenerate very quickly

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

1 foot per second

150 meters per second

1 meter per second

100 miles per hour