all of the above

brains

a nerve

spinal cord

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

prison cells

stem cells

muscle cells

glial cells

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

skin cells

muscle cells

liver cells

stem cells

hormonal

telegraph

proteins

electrical impulses

1 year

10 years

100 years

1 month

wire

muscle

the brain

nerve

100 miles per hour

1 meter per second

150 meters per second

1 foot per second