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How can people with heart condition suffer swollen feet?
You are talking about "heart failure". There are two kinds. Edema (swelling) in the feet happens when the heart is having trouble pumping blood out of the body and to the lungs for oxygenation. Because of this, fluids build up in the extremities. Sometimes the heart has trouble pumping blood out of the lungs and back into the body's general circulation. In this case the build-up of fluid is in the lungs.
How does blood defy gravity and circulate from your toes back up to your heart?
You may not know this but as well as pumping, your heart also sucks blood back into its' chambers like a vaccum which is how your blood gets returned to your heart.
What blood vessels carries oxygenated blood to the heart?
The coronary arteries carry blood to the muscle that makes up the heart but this blood comes directly from the large artery called the aorta.Otherwise arteries always carry blood way from the heart and veins carry it back. As far as if it they carry oxygen or not, veins carry blood back from the body without oxygen and back from the lungs with oxygen.
Where do the right side of a bird's heart pump blood to?
The right side of the heart pumps blood to the lungs to pick up oxygen. From the lungs it goes back to the left side of the heart, which pumps it out to the rest of the body. Blood then returns to the right side of the heart and starts the cycle over.
When you are standing on your head the blood goes to your head so when you are standing up straight why doesn't the blood go to your feet?
Your heart pumps blood to all organs in your body. when you stand upright blood will be pumped to your feet with much less effort than standing on your head. When you are under normal gravitational force, even though gravity has an effect on blood flow, your blood circulation is totally controlled by your heart. So when you stand on your head blood will also be pumped to your feet.
