wire

the brain

nerve

muscle

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

muscle cells

glial cells

stem cells

prison cells

100 years

1 month

1 year

10 years

brains

a nerve

spinal cord

all of the above

100 miles per hour

150 meters per second

1 foot per second

1 meter per second

skin cells

liver cells

muscle cells

stem cells

proteins

hormonal

telegraph

electrical impulses

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons