proteins

telegraph

hormonal

electrical impulses

the brain

nerve

muscle

wire

stem cells

liver cells

skin cells

muscle cells

prison cells

stem cells

muscle cells

glial cells

pyramidal neurons

multipolar neurons

bipolar neurons

Purkinje neurons

1 month

100 years

1 year

10 years

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

spinal cord

all of the above

a nerve

brains

1 foot per second

100 miles per hour

150 meters per second

1 meter per second