1 month

1 year

100 years

10 years

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

100 miles per hour

150 meters per second

1 meter per second

1 foot per second

spinal cord

brains

a nerve

all of the above

telegraph

hormonal

electrical impulses

proteins

muscle

the brain

nerve

wire

liver cells

muscle cells

stem cells

skin cells

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

glial cells

stem cells

muscle cells

prison cells