the brain

nerve

muscle

wire

liver cells

muscle cells

skin cells

stem cells

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

1 foot per second

150 meters per second

1 meter per second

100 miles per hour

muscle cells

prison cells

glial cells

stem cells

electrical impulses

telegraph

proteins

hormonal

all of the above

brains

spinal cord

a nerve

10 years

1 year

1 month

100 years

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons