10 years

100 years

1 year

1 month

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

spinal cord

brains

all of the above

a nerve

telegraph

proteins

electrical impulses

hormonal

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

skin cells

stem cells

liver cells

muscle cells

prison cells

muscle cells

stem cells

glial cells

nerve

wire

the brain

muscle