they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

stem cells

muscle cells

glial cells

prison cells

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

skin cells

muscle cells

stem cells

liver cells

100 miles per hour

1 foot per second

150 meters per second

1 meter per second

a nerve

brains

all of the above

spinal cord

proteins

telegraph

hormonal

electrical impulses

1 year

10 years

100 years

1 month

wire

muscle

nerve

the brain