muscle cells

liver cells

stem cells

skin cells

the brain

wire

muscle

nerve

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

stem cells

muscle cells

glial cells

prison cells

proteins

telegraph

hormonal

electrical impulses

brains

spinal cord

all of the above

a nerve

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

1 month

1 year

100 years

10 years