liver cells

muscle cells

stem cells

skin cells

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

muscle cells

glial cells

prison cells

stem cells

hormonal

electrical impulses

telegraph

proteins

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

wire

muscle

nerve

the brain

brains

spinal cord

all of the above

a nerve

100 years

10 years

1 month

1 year

1 meter per second

1 foot per second

100 miles per hour

150 meters per second