skin cells

muscle cells

liver cells

stem cells

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons

10 years

100 years

1 year

1 month

glial cells

prison cells

muscle cells

stem cells

1 meter per second

100 miles per hour

150 meters per second

1 foot per second

proteins

hormonal

telegraph

electrical impulses

spinal cord

brains

all of the above

a nerve

the brain

wire

nerve

muscle