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

nerve

wire

the brain

muscle

stem cells

muscle cells

glial cells

prison cells

1 year

1 month

100 years

10 years

stem cells

muscle cells

skin cells

liver cells

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons

spinal cord

all of the above

a nerve

brains

electrical impulses

hormonal

proteins

telegraph

1 foot per second

1 meter per second

100 miles per hour

150 meters per second