all of the above

brains

spinal cord

a nerve

pyramidal neurons

multipolar neurons

bipolar neurons

Purkinje neurons

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

telegraph

hormonal

electrical impulses

proteins

prison cells

stem cells

glial cells

muscle cells

wire

nerve

the brain

muscle

1 year

1 month

10 years

100 years

1 meter per second

1 foot per second

150 meters per second

100 miles per hour

liver cells

stem cells

muscle cells

skin cells