1 year

100 years

10 years

1 month

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

the brain

nerve

muscle

wire

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

stem cells

prison cells

glial cells

muscle cells

muscle cells

skin cells

liver cells

stem cells

multipolar neurons

Purkinje neurons

bipolar neurons

pyramidal neurons

electrical impulses

telegraph

hormonal

proteins

spinal cord

a nerve

all of the above

brains