all of the above

spinal cord

brains

a nerve

hormonal

electrical impulses

telegraph

proteins

100 years

1 month

10 years

1 year

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

muscle

wire

nerve

the brain

stem cells

glial cells

muscle cells

prison cells

muscle cells

stem cells

skin cells

liver cells

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons