wire

muscle

nerve

the brain

proteins

hormonal

telegraph

electrical impulses

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

stem cells

prison cells

muscle cells

glial cells

muscle cells

stem cells

skin cells

liver cells

spinal cord

all of the above

a nerve

brains

10 years

1 month

1 year

100 years

multipolar neurons

Purkinje neurons

bipolar neurons

pyramidal neurons