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

100 miles per hour

1 meter per second

150 meters per second

1 foot per second

1 month

100 years

1 year

10 years

all of the above

a nerve

spinal cord

brains

liver cells

skin cells

muscle cells

stem cells

wire

muscle

the brain

nerve

proteins

telegraph

electrical impulses

hormonal

prison cells

glial cells

muscle cells

stem cells

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons