a nerve

brains

all of the above

spinal cord

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

prison cells

stem cells

muscle cells

glial cells

electrical impulses

proteins

telegraph

hormonal

stem cells

skin cells

muscle cells

liver cells

1 year

1 month

10 years

100 years

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

150 meters per second

1 foot per second

100 miles per hour

1 meter per second

the brain

muscle

wire

nerve