proteins

telegraph

electrical impulses

hormonal

wire

nerve

the brain

muscle

stem cells

skin cells

liver cells

muscle cells

1 month

10 years

100 years

1 year

spinal cord

a nerve

brains

all of the above

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

multipolar neurons

Purkinje neurons

bipolar neurons

pyramidal neurons

stem cells

glial cells

prison cells

muscle cells

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