muscle

wire

the brain

nerve

proteins

electrical impulses

hormonal

telegraph

all of the above

a nerve

spinal cord

brains

prison cells

stem cells

glial cells

muscle cells

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

100 years

10 years

1 month

1 year

muscle cells

liver cells

skin cells

stem cells

150 meters per second

1 foot per second

100 miles per hour

1 meter per second