Nervous System

telegraph

electrical impulses

hormonal

proteins

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

nerve

muscle

wire

the brain

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons

brains

spinal cord

a nerve

all of the above

1 year

100 years

1 month

10 years

skin cells

liver cells

stem cells

muscle cells

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

muscle cells

stem cells

glial cells

prison cells