Nervous System

10 years

1 month

100 years

1 year

proteins

hormonal

telegraph

electrical impulses

all of the above

spinal cord

a nerve

brains

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

liver cells

skin cells

muscle cells

stem cells

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

nerve

wire

muscle

the brain

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

prison cells

stem cells

glial cells

muscle cells