the brain

nerve

wire

muscle

telegraph

proteins

hormonal

electrical impulses

100 years

1 year

1 month

10 years

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons

1 meter per second

150 meters per second

100 miles per hour

1 foot per second

glial cells

muscle cells

stem cells

prison cells

liver cells

skin cells

stem cells

muscle cells

all of the above

spinal cord

a nerve

brains

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body