stem cells

muscle cells

skin cells

liver cells

brains

a nerve

all of the above

spinal cord

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

they do not have a nucleus

wire

muscle

the brain

nerve

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

10 years

1 month

100 years

1 year

electrical impulses

telegraph

hormonal

proteins

glial cells

muscle cells

stem cells

prison cells

100 miles per hour

1 meter per second

1 foot per second

150 meters per second