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

they regenerate very quickly

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

a nerve

brains

all of the above

spinal cord

skin cells

stem cells

liver cells

muscle cells

telegraph

hormonal

proteins

electrical impulses

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

stem cells

prison cells

muscle cells

glial cells

wire

nerve

the brain

muscle

1 year

100 years

1 month

10 years