a nerve

all of the above

brains

spinal cord

skin cells

liver cells

stem cells

muscle cells

hormonal

telegraph

electrical impulses

proteins

the brain

muscle

nerve

wire

glial cells

prison cells

muscle cells

stem cells

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

1 month

100 years

10 years

1 year

150 meters per second

1 foot per second

100 miles per hour

1 meter per second

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body