wire

the brain

nerve

muscle

stem cells

muscle cells

skin cells

liver cells

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

stem cells

glial cells

prison cells

muscle cells

telegraph

proteins

electrical impulses

hormonal

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

1 month

1 year

100 years

10 years

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

spinal cord

a nerve

all of the above

brains