spinal cord

a nerve

all of the above

brains

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

prison cells

stem cells

muscle cells

glial cells

stem cells

liver cells

skin cells

muscle cells

proteins

telegraph

electrical impulses

hormonal

1 meter per second

1 foot per second

150 meters per second

100 miles per hour

nerve

the brain

muscle

wire

1 year

1 month

10 years

100 years

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons