liver cells

skin cells

stem cells

muscle cells

a nerve

spinal cord

brains

all of the above

proteins

hormonal

telegraph

electrical impulses

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

muscle

the brain

nerve

wire

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

1 year

10 years

100 years

1 month

muscle cells

prison cells

glial cells

stem cells