stem cells

skin cells

liver cells

muscle cells

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

telegraph

proteins

hormonal

electrical impulses

brains

all of the above

spinal cord

a nerve

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

1 year

10 years

100 years

1 month

wire

the brain

muscle

nerve

muscle cells

prison cells

stem cells

glial cells