spinal cord

all of the above

a nerve

brains

1 year

100 years

1 month

10 years

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

muscle

nerve

wire

the brain

glial cells

stem cells

prison cells

muscle cells

skin cells

stem cells

liver cells

muscle cells

electrical impulses

telegraph

hormonal

proteins

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

150 meters per second

1 meter per second

1 foot per second

100 miles per hour