stem cells

muscle cells

liver cells

skin cells

100 years

10 years

1 month

1 year

muscle

wire

the brain

nerve

hormonal

electrical impulses

telegraph

proteins

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

brains

a nerve

all of the above

spinal cord

150 meters per second

1 foot per second

100 miles per hour

1 meter per second

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons

prison cells

muscle cells

glial cells

stem cells