a nerve

spinal cord

brains

all of the above

electrical impulses

telegraph

hormonal

proteins

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

skin cells

liver cells

stem cells

muscle cells

100 years

1 month

10 years

1 year

glial cells

stem cells

muscle cells

prison cells

wire

nerve

the brain

muscle

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

1 meter per second

150 meters per second

1 foot per second

100 miles per hour