they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

a nerve

brains

spinal cord

all of the above

electrical impulses

telegraph

hormonal

proteins

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons

muscle

wire

nerve

the brain

liver cells

stem cells

skin cells

muscle cells

10 years

1 year

100 years

1 month

stem cells

glial cells

prison cells

muscle cells

1 meter per second

1 foot per second

100 miles per hour

150 meters per second