Biology flow of blood

Question

How does blood flow from the right hand to the heart?

How does blood flow from the pancreas to the heart?

Describe pathway through the heart, Gas exchange, valves, Chambers ect.

Answer 1

Hi Doll! Blood flows from the right hand and the pancreas to the heart all in the same fashion because all blood flows to and from the heart. This is a process called hemodynamics which literally means blood change. All blood flowing TO the heart is de-oxygenated or, at the very least, oxygen poor. That means that it has dropped off oxygen (and nutrients and as a ton of other things specific to where it's coming from) and now needs to return to the heart where it can get more oxygen. So, basically, blood, at the tiniest level, is exchanged through capillaries which connect the arteries and veins. The veins carry the blood from the hand or pancreas or anywhere back to the heart. The de-oxygenated blood enters the RIGHT atrium which then dumped into the RIGHT ventricle via the tricuspid valve. (I think ATRIUM like an atrium in a big house which is literally the entry way and therefore the first room you enter when you go through the door). Once the blood enters the RIGHT ventricle, the tricuspid valve shuts (think of it like a door) and the blood is forced through the pulmonic (pulmonary = lungs) valve into the lungs where it exchanges CO2 (waste from the organ) for O2 (to bring BACK to the organs again). (PS - the blood enters the heart through the inferior (behind) and superior (front) vena cava (or basically big vein). Remember, veins always carry blood BACK to the heart (because the heart is so vain and it's always about the heart..ha ha!) and arteries always carry blood AWAY from the heart because Artery and Away both start with A. :)