1 year

1 month

10 years

100 years

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

the brain

muscle

nerve

wire

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

brains

all of the above

spinal cord

a nerve

telegraph

hormonal

proteins

electrical impulses

prison cells

stem cells

muscle cells

glial cells

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons

liver cells

muscle cells

skin cells

stem cells