10 years

100 years

1 year

1 month

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

muscle

the brain

nerve

wire

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

a nerve

brains

all of the above

spinal cord

electrical impulses

proteins

telegraph

hormonal

stem cells

skin cells

liver cells

muscle cells

glial cells

prison cells

stem cells

muscle cells

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons