prison cells

stem cells

glial cells

muscle cells

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

liver cells

stem cells

skin cells

muscle cells

100 miles per hour

1 meter per second

150 meters per second

1 foot per second

pyramidal neurons

multipolar neurons

bipolar neurons

Purkinje neurons

100 years

10 years

1 year

1 month

brains

a nerve

spinal cord

all of the above

nerve

the brain

wire

muscle

electrical impulses

proteins

hormonal

telegraph