the heart

If you're asking for the pathway of blood through the heart, here it goes:

1. Blood flows to the heart via the Inferior Vena Cava(receives blood from the lower extremities and the abdominal organs, & the Superior Vena Cava(receives blood from the upper torso,) to the Right Atrium.

2. Right Atrium through the Tricuspid Valve to the Right Ventricle.

3. The blood is pumped from the Right Ventricle through the Pulmonary Valve, to the Pulmonary Artery to the lungs.

*The blood thus far in de-oxygenated. The blood is oxygenated in the lungs, and waste products removed (CO2).

4. The blood returns from the lungs via the Pulmonary Veins,(which are the only veins that carry oxygenated blood), into the Left Atrium, then goes through the Mitral or Bicuspid Valve, to the Left Ventricle.

5. The blood is pumped from the Left Ventricle through the Aortic Valve, then flows through the aorta to carry it's oxygenated blood to the entire body.

I hope this helps, and that it's what you were asking about.

im so lost please explain how the heart pumps the blood throuh right atrium left atium,andright ventricle,and the leftventricle

my instructor talks 50miles an hour and some how all bloodatriums ventricles flows the blood through one another?

thanks kathynursing

How about learning the song?

Pup, pump, pumps your blood

The right atrium's where the process begins,

Where the CO2 blood enters the heart.

Through the tricuspid valve to the right ventricle

The pulmonary artery and lungs.

Once inside the lungs it dumps it carbon dioxide

And picks up its oxygen supply

The it's back to the heart through the pulmonary vein

Through the atrium and left ventricle.

Pump, pump, pumps your blood.

The aortic vavles where the blood leaves the heart

Then it's channeled to the rest of the bod

The arteries, arterioles, and capillaries too

Bring the oxygenated blood to the cells

the tissues and the cells trade of waste and CO2

Which is carried through the venules and the veins

Through the larger vena cava to the atrium and lungs

And we're back to where we started in the heart."

Someone put this on here a while back its a pretty easy way to remember the flow.

http://health.howstuffworks.com/adam-200083.htm

I'm a big fan of this site.

That link says it all....THANKS!!!

To the original poster, when you figure the heart out, another interesting thing about the heart is that when the blood enters the aortic semi lunar valve, on the aortic before it goes towards the aortic arch there is two arteries that are called coronary arteries, those are the arteries that feeds the heart with oxygenated blood and its nutrients, if it's occluded, it's called an myocardio infarction (MI or heart attack)