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

they regenerate very quickly

telegraph

hormonal

electrical impulses

proteins

liver cells

muscle cells

stem cells

skin cells

glial cells

prison cells

muscle cells

stem cells

a nerve

spinal cord

all of the above

brains

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

wire

nerve

the brain

muscle

10 years

1 year

100 years

1 month