Hahaha I was gonna post the same thing as you pripyatplatypus.
If I sound like what I just heard, I'm vowing never to speak again. I shall only speak using a marker and board.
Actually, the thing about the upside down eyes is not true. Our who reality is created by our brain through the optic tracts and nerves-- our perception of the world is false. I could go on but it would make it a lot more confusing.
The heart actually responding to the pressure created by how many blood (from the atrium) that goes into the ventricle. It creates a number of pressure difference that will make the ventricle use the pressure difference to create the pumping mechanism.
If I sound like what I just heard, I'm vowing never to speak again. I shall only speak using a marker and board.
Excuse me while I go bath in Dettol