100 years

1 year

10 years

1 month

proteins

electrical impulses

telegraph

hormonal

nerve

the brain

muscle

wire

glial cells

muscle cells

stem cells

prison cells

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

spinal cord

a nerve

brains

all of the above

skin cells

stem cells

liver cells

muscle cells

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons

100 miles per hour

150 meters per second

1 meter per second

1 foot per second