spinal cord

brains

a nerve

all of the above

10 years

100 years

1 year

1 month

proteins

hormonal

telegraph

electrical impulses

prison cells

stem cells

glial cells

muscle cells

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

1 foot per second

150 meters per second

1 meter per second

100 miles per hour

the brain

nerve

muscle

wire

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons

liver cells

skin cells

stem cells

muscle cells