they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

1 meter per second

100 miles per hour

1 foot per second

150 meters per second

proteins

electrical impulses

hormonal

telegraph

wire

nerve

the brain

muscle

100 years

1 month

10 years

1 year

glial cells

prison cells

stem cells

muscle cells

a nerve

spinal cord

brains

all of the above

liver cells

skin cells

stem cells

muscle cells

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons