Nervous System

proteins

electrical impulses

hormonal

telegraph

liver cells

skin cells

muscle cells

stem 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

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

muscle

nerve

the brain

wire

spinal cord

a nerve

brains

all of the above

1 month

1 year

100 years

10 years

stem cells

glial cells

muscle cells

prison cells