spinal cord

a nerve

all of the above

brains

10 years

1 month

100 years

1 year

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

proteins

electrical impulses

telegraph

hormonal

pyramidal neurons

multipolar neurons

bipolar neurons

Purkinje neurons

prison cells

muscle cells

glial cells

stem cells

nerve

muscle

wire

the brain

skin cells

stem cells

muscle cells

liver cells

100 miles per hour

150 meters per second

1 foot per second

1 meter per second