they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

brains

a nerve

all of the above

spinal cord

muscle cells

stem cells

skin cells

liver cells

proteins

telegraph

hormonal

electrical impulses

100 years

10 years

1 month

1 year

the brain

wire

nerve

muscle

glial cells

muscle cells

stem cells

prison cells

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons