1 year

10 years

1 month

100 years

spinal cord

brains

a nerve

all of the above

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

wire

nerve

the brain

muscle

telegraph

hormonal

electrical impulses

proteins

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

glial cells

prison cells

stem cells

muscle cells

stem cells

liver cells

muscle cells

skin cells

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons