all of the above

spinal cord

brains

a nerve

glial cells

muscle cells

stem cells

prison cells

the brain

wire

muscle

nerve

electrical impulses

proteins

hormonal

telegraph

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

10 years

1 year

1 month

100 years

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

stem cells

muscle cells

liver cells

skin cells

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus