the brain

wire

muscle

nerve

1 month

10 years

1 year

100 years

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

skin cells

muscle cells

stem cells

liver cells

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons

proteins

electrical impulses

telegraph

hormonal

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

muscle cells

stem cells

glial cells

prison cells

all of the above

spinal cord

a nerve

brains