nerve

wire

muscle

the brain

prison cells

glial cells

muscle cells

stem cells

electrical impulses

hormonal

telegraph

proteins

liver cells

stem cells

muscle cells

skin cells

a nerve

brains

all of the above

spinal cord

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

100 years

1 year

1 month

10 years

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

they regenerate very quickly