10 years

1 year

1 month

100 years

all of the above

a nerve

spinal cord

brains

1 meter per second

100 miles per hour

150 meters per second

1 foot per second

stem cells

skin cells

muscle cells

liver cells

muscle

nerve

wire

the brain

electrical impulses

telegraph

hormonal

proteins

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

prison cells

muscle cells

glial cells

stem cells

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus