liver cells

muscle cells

skin cells

stem cells

1 month

100 years

10 years

1 year

telegraph

proteins

hormonal

electrical impulses

muscle

nerve

wire

the brain

brains

a nerve

spinal cord

all of the above

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons

1 meter per second

1 foot per second

100 miles per hour

150 meters per second

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

glial cells

stem cells

muscle cells

prison cells