spinal cord

a nerve

all of the above

brains

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

nerve

muscle

wire

the brain

prison cells

stem cells

muscle cells

glial cells

100 miles per hour

1 foot per second

150 meters per second

1 meter per second

100 years

1 month

10 years

1 year

muscle cells

liver cells

stem cells

skin cells

hormonal

electrical impulses

proteins

telegraph

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons