100 years

1 month

1 year

10 years

muscle cells

stem cells

skin cells

liver cells

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

brains

a nerve

spinal cord

all of the above

wire

nerve

the brain

muscle

proteins

electrical impulses

hormonal

telegraph

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons

glial cells

prison cells

stem cells

muscle cells