they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

liver cells

skin cells

muscle cells

stem cells

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

stem cells

muscle cells

glial cells

prison cells

10 years

100 years

1 month

1 year

nerve

the brain

muscle

wire

pyramidal neurons

multipolar neurons

bipolar neurons

Purkinje neurons

all of the above

a nerve

brains

spinal cord

telegraph

hormonal

proteins

electrical impulses