wire

muscle

nerve

the brain

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

1 meter per second

100 miles per hour

150 meters per second

1 foot per second

liver cells

stem cells

muscle cells

skin cells

a nerve

all of the above

spinal cord

brains

1 year

100 years

1 month

10 years

electrical impulses

proteins

hormonal

telegraph

glial cells

stem cells

prison cells

muscle cells

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons