10 years

1 month

100 years

1 year

the brain

muscle

wire

nerve

spinal cord

all of the above

brains

a nerve

1 meter per second

100 miles per hour

1 foot per second

150 meters per second

electrical impulses

proteins

telegraph

hormonal

liver cells

skin cells

muscle cells

stem cells

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

stem cells

glial cells

prison cells

muscle cells