spinal cord

all of the above

brains

a nerve

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

the brain

muscle

wire

nerve

skin cells

muscle cells

stem cells

liver cells

proteins

hormonal

electrical impulses

telegraph

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

muscle cells

stem cells

prison cells

glial cells

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

1 year

100 years

1 month

10 years