they do not have a nucleus

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

all of the above

spinal cord

brains

a nerve

prison cells

muscle cells

glial cells

stem cells

skin cells

stem cells

muscle cells

liver cells

multipolar neurons

pyramidal neurons

bipolar neurons

Purkinje neurons

100 years

1 year

10 years

1 month

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

wire

the brain

muscle

nerve

electrical impulses

hormonal

telegraph

proteins