Nervous System

brains

a nerve

all of the above

spinal cord

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

100 years

1 year

10 years

1 month

hormonal

electrical impulses

telegraph

proteins

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

skin cells

liver cells

muscle cells

stem cells

the brain

nerve

muscle

wire

muscle cells

stem cells

prison cells

glial cells

1 meter per second

150 meters per second

100 miles per hour

1 foot per second