brains

spinal cord

all of the above

a nerve

they do not have a nucleus

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

muscle

the brain

wire

nerve

prison cells

glial cells

stem cells

muscle cells

10 years

1 year

1 month

100 years

skin cells

muscle cells

stem cells

liver cells

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

hormonal

proteins

telegraph

electrical impulses

100 miles per hour

150 meters per second

1 meter per second

1 foot per second