Nervous System

brains

all of the above

a nerve

spinal cord

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

nerve

wire

the brain

muscle

electrical impulses

proteins

telegraph

hormonal

1 year

1 month

100 years

10 years

muscle cells

skin cells

liver cells

stem cells

glial cells

muscle cells

stem cells

prison cells

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

1 foot per second

100 miles per hour

150 meters per second

1 meter per second