10 years

1 year

100 years

1 month

electrical impulses

proteins

telegraph

hormonal

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

a nerve

brains

all of the above

spinal cord

muscle

wire

nerve

the brain

stem cells

muscle cells

liver cells

skin 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

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons

muscle cells

stem cells

glial cells

prison cells