brains

spinal cord

all of the above

a nerve

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

1 month

1 year

10 years

100 years

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

they regenerate very quickly

the brain

nerve

muscle

wire

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

telegraph

electrical impulses

hormonal

proteins

stem cells

skin cells

liver cells

muscle cells

muscle cells

prison cells

glial cells

stem cells