100 years

1 month

1 year

10 years

nerve

wire

the brain

muscle

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons

liver cells

skin cells

muscle cells

stem cells

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

all of the above

brains

a nerve

spinal cord

proteins

telegraph

electrical impulses

hormonal

prison cells

glial cells

muscle cells

stem cells

1 meter per second

1 foot per second

150 meters per second

100 miles per hour