a nerve

spinal cord

brains

all of the above

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

prison cells

stem cells

muscle cells

glial cells

hormonal

electrical impulses

telegraph

proteins

the brain

nerve

muscle

wire

10 years

1 year

100 years

1 month

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

muscle cells

stem cells

skin cells

liver cells

150 meters per second

100 miles per hour

1 meter per second

1 foot per second