stem cells

liver cells

skin cells

muscle cells

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

a nerve

all of the above

spinal cord

brains

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

prison cells

glial cells

stem cells

muscle cells

the brain

nerve

muscle

wire

1 year

10 years

1 month

100 years