liver cells

skin cells

muscle cells

stem cells

the brain

wire

muscle

nerve

telegraph

hormonal

proteins

electrical impulses

100 miles per hour

150 meters per second

1 foot per second

1 meter per second

brains

all of the above

a nerve

spinal cord

1 year

10 years

1 month

100 years

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

glial cells

stem cells

prison cells

muscle cells