spinal cord

brains

all of the above

a nerve

muscle cells

glial cells

prison cells

stem cells

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

nerve

the brain

muscle

wire

10 years

100 years

1 month

1 year

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

hormonal

telegraph

electrical impulses

proteins

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

muscle cells

liver cells

stem cells

skin cells