1 month

10 years

100 years

1 year

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

spinal cord

a nerve

brains

all of the above

skin cells

stem cells

muscle cells

liver cells

prison cells

stem cells

glial cells

muscle cells

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

wire

muscle

nerve

the brain

telegraph

proteins

hormonal

electrical impulses

100 miles per hour

1 meter per second

150 meters per second

1 foot per second