wire

muscle

the brain

nerve

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

hormonal

proteins

telegraph

electrical impulses

1 meter per second

1 foot per second

150 meters per second

100 miles per hour

skin cells

muscle cells

stem cells

liver cells

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

1 year

1 month

100 years

10 years

glial cells

muscle cells

stem cells

prison cells

a nerve

all of the above

brains

spinal cord