Cadavers are my Saviors!

So, I got it.
PREVIOUSLY ON SCIENCE:
Galen published his work 2nd century. 

• Food goes into the heart and is turned into blood
• Veins are air passageways
• Blood doesn't move

NOW:
William Harvey did Cadavers (Ewww) and said:

• Food goes into the stomach, not heart
• Heart pumps blood around the body
• Blood goes through veins

And:
Scientist disagreed :(

--William Harvey