10 years

1 year

1 month

100 years

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

they regenerate very quickly

brains

all of the above

a nerve

spinal cord

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

muscle cells

skin cells

liver cells

stem cells

glial cells

prison cells

stem cells

muscle cells

the brain

nerve

muscle

wire

proteins

telegraph

hormonal

electrical impulses

1 foot per second

1 meter per second

150 meters per second

100 miles per hour