skin cells

liver cells

stem cells

muscle cells

100 miles per hour

1 meter per second

150 meters per second

1 foot per second

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

nerve

wire

the brain

muscle

proteins

hormonal

telegraph

electrical impulses

stem cells

glial cells

muscle cells

prison cells

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons

1 month

1 year

100 years

10 years

all of the above

a nerve

brains

spinal cord