1 year

100 years

10 years

1 month

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

telegraph

electrical impulses

proteins

hormonal

glial cells

muscle cells

stem cells

prison cells

all of the above

brains

a nerve

spinal cord

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

multipolar neurons

Purkinje neurons

bipolar neurons

pyramidal neurons

skin cells

liver cells

muscle cells

stem cells

nerve

the brain

wire

muscle