muscle

nerve

the brain

wire

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

hormonal

electrical impulses

proteins

telegraph

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

skin cells

muscle cells

liver cells

stem cells

100 years

1 month

1 year

10 years

glial cells

muscle cells

stem cells

prison cells

brains

all of the above

spinal cord

a nerve

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body