they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

electrical impulses

hormonal

telegraph

proteins

muscle

the brain

wire

nerve

1 year

100 years

1 month

10 years

a nerve

all of the above

spinal cord

brains

Purkinje neurons

bipolar neurons

pyramidal neurons

multipolar neurons

glial cells

muscle cells

stem cells

prison cells

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

stem cells

skin cells

liver cells

muscle cells