proteins

telegraph

electrical impulses

hormonal

wire

nerve

the brain

muscle

muscle cells

skin cells

liver cells

stem cells

all of the above

brains

a nerve

spinal cord

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

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons

100 years

1 year

1 month

10 years

1 meter per second

100 miles per hour

1 foot per second

150 meters per second

muscle cells

glial cells

prison cells

stem cells