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

they do not have a nucleus

electrical impulses

hormonal

proteins

telegraph

a nerve

spinal cord

all of the above

brains

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons

liver cells

skin cells

stem cells

muscle cells

1 month

1 year

100 years

10 years

stem cells

glial cells

muscle cells

prison cells

wire

the brain

muscle

nerve

150 meters per second

1 foot per second

1 meter per second

100 miles per hour