100 years

1 month

1 year

10 years

proteins

hormonal

telegraph

electrical impulses

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

nerve

muscle

wire

the brain

stem cells

skin cells

muscle cells

liver cells

glial cells

stem cells

prison cells

muscle cells

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

bipolar neurons

pyramidal neurons

multipolar neurons

Purkinje neurons

spinal cord

brains

a nerve

all of the above