all of the above

brains

spinal cord

a nerve

muscle

nerve

wire

the brain

electrical impulses

proteins

hormonal

telegraph

1 meter per second

150 meters per second

100 miles per hour

1 foot per second

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

muscle cells

stem cells

glial cells

prison cells

liver cells

skin cells

stem cells

muscle cells

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

10 years

100 years

1 month

1 year