they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

spinal cord

brains

a nerve

all of the above

100 years

1 month

10 years

1 year

stem cells

glial cells

prison cells

muscle cells

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

100 miles per hour

150 meters per second

1 foot per second

1 meter per second

the brain

nerve

wire

muscle

proteins

electrical impulses

hormonal

telegraph

skin cells

muscle cells

stem cells

liver cells