liver cells

muscle cells

stem cells

skin cells

hormonal

electrical impulses

proteins

telegraph

10 years

100 years

1 month

1 year

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

nerve

muscle

wire

the brain

glial cells

prison cells

muscle cells

stem cells

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

spinal cord

a nerve

brains

all of the above