all of the above

a nerve

brains

spinal cord

muscle cells

prison cells

stem cells

glial cells

hormonal

proteins

electrical impulses

telegraph

liver cells

skin cells

stem cells

muscle cells

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

10 years

1 year

100 years

1 month

wire

nerve

muscle

the brain

1 foot per second

100 miles per hour

1 meter per second

150 meters per second