100 years

10 years

1 year

1 month

spinal cord

brains

a nerve

all of the above

wire

muscle

the brain

nerve

they regenerate very quickly

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

prison cells

stem cells

muscle cells

glial cells

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons

electrical impulses

telegraph

hormonal

proteins

liver cells

stem cells

skin cells

muscle cells