all of the above

spinal cord

a nerve

brains

they do not have a nucleus

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

nerve

wire

muscle

the brain

1 year

100 years

1 month

10 years

prison cells

stem cells

muscle cells

glial cells

stem cells

muscle cells

liver cells

skin cells

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

proteins

electrical impulses

hormonal

telegraph