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

1 year

1 month

10 years

100 years

the brain

muscle

wire

nerve

stem cells

glial cells

muscle cells

prison cells

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons

proteins

hormonal

electrical impulses

telegraph

a nerve

all of the above

brains

spinal cord

stem cells

liver cells

muscle cells

skin cells