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Doctor insights on: The Route That Blood Takes From The Heart To The Lungs And Back

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Does a pump in the heart move blood from the atria to the ventricles?

Does a pump in the heart move blood from the atria to the ventricles?

The heart muscle: The heart is a muscle and it is the contraction of that muscle which propels the blood. ...Read more

Lung (Definition)

Deoxygenated blood enters the lungs from the right side of the heart and travels to the lungs. When you inspire, oxygen flows into the lungs, transverses the capilliares and attaches to hemoglobin down a gradient. At the same time, co2 diffuses into the capilaries and is expelled with exhalation. Oxygen rich blood then flows to the left side of the heart and into the ...Read more


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How does blood get from the legs back to the heart if that defies the rules of gravity?

How does blood get from the legs back to the heart if that defies the rules of gravity?

Blood flow: The circulatory system is a closed loop pump system. The heart pumps blood into the system and as long as the peripheral resistance vessels and veins do their work the blood will rise up the legs through the abdomen and to the heart. This does require some muscle tightening in the legs. When you see soldiers fall over from standing still at attention for a long time, this is a system failure ...Read more

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How does the heart get oxygen if it's the organ that pumping the blood to the rest of the body?

How does the heart get oxygen if it's the organ that pumping the blood to the rest of the body?

Oxygen: Oxygenated blood leaves the pulmonary circulation and is pumped through the left side of the heart. After it goes through the aortic valve oxygenated blood flows in both systole and diastole through the coronary arteries into the heart muscle. ...Read more

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Can a blood clot from the leg eventually break off and travel to the lungs?

Can a blood clot from the leg eventually break off and travel to the lungs?

Yes: most lung clots (pulmonary emboli) come from the legs (deep venous thrombosis). Half of all DVT's results in PE if you look for it. ...Read more

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What is the path that blood takes through the heart?

What is the path that blood takes through the heart?

2 pumps in series: Blood enters the right atrium and passes thru the tricuspid valve into the right ventricle. This beats and pushes the blood thru the pulmonary valve into the pulmonary arteries and into the lung. Oxygen is put into the blood which returns to the left atrium thru the pulmonary veins. The blood leaves the left atrium thru the mitral valve into the left ventricle which pushes it thru the aortic valve. ...Read more

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Is it true that a build-up of fluid in the lungs will result in a reduced amount of oxygen in the blood returning to the heart?

Is it true that a build-up of fluid in the lungs will result in a reduced amount of oxygen in the blood returning to the heart?

If Bad Enough: The lungs have remarkable capacity to overcome problems with what we'd call "gas exchange", but if enough of the lung tissue is taken out of the picture (eg by being covered in fluid) then yes, the amount of oxygen brought back to the heart will definitely fall. ...Read more

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What happens when the lungs receive blood from the left atrium of the heart?

What happens when the lungs receive blood from the left atrium of the heart?

Lungs: Normally the lungs do not receive blood from the left atrium. Blood travels from the right atrium to the right ventricle to the lungs and then comes back from the lungs to the left atrium to the left ventricle and is then pumped out through the aorta to the rest of the body. ...Read more

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How does the blood get to the gastrocnemius from the heart?

Gastocnemius: Aorta to iliac to femoral arteries, branches off femoral to gastocs. ...Read more

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"hello doctor. I want to know if the blood circulation in a teeth continues from outside up to 80% and only 20% is the supply of blood from the pulp..

"hello doctor. I want to know if the blood circulation in a teeth continues from outside up to 80% and only 20% is the supply of blood from the pulp..

Not accurate: A tooth consists mostly of hard tissues called dentin and enamel, neither of which need blood flow to function. The living part of the tooth is the pulp, made up of nerves, blood vessels, and connective tissues inside the tooth. The pulp needs blood flow to survive and it provides 100% of the blood flow inside the tooth. Blood flow in tissues around a tooth cannot feed the pulp. ...Read more

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What is the aorta in the heart and how does it work with the rest of the circulatory system?

What is the aorta in the heart and how does it work with the rest of the circulatory system?

Main artery: The aorta is the main artery in the boday and is responsible for delivering blood to the rest of the body. ...Read more

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Is a v fib, where the bottom of the heat flutters and the blood does not go to the rest of the body, considered a heart attack?

Is a v fib, where the bottom of the heat flutters and the blood does not go to the rest of the body, considered a heart attack?

No: Ventricular fibrillation is a type of arrhythmia (abnormal heart rhythm) that can result from a heart attack. A heart attack implies a blockage of one of the coronary arteries resulting in lack of blood supply (and oxygen) to a portion of the heart. However, ventricular fibrillation has many other potential causes. ...Read more

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True?False? Laying on ur back during pregnancy slows the return of blood to the heart which reduces blood flow to the fetus less oxygen less nutrients

True?False? Laying on ur back during pregnancy slows the return of blood to the heart which reduces blood flow to the fetus less oxygen less nutrients

Depends: early in pregnancy lying on your back is fine. Later in the third trimester some women may be advised to lay on their left side to reduce blood pressure or in cases of poor fetal growth. However, for most women lying on your back is compensated with an increase in your pulse and the oxygen level to the baby is fine. So, for some this is true, but in general is false. ...Read more

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What are the internal(parasite) and external(host) signals that guide it to their destination in the body? Ex. Malaria to the liver then to the blood

What are the internal(parasite) and external(host) signals that guide it to their destination in the body? Ex. Malaria to the liver then to the blood

Great question!: ...and a hard one to answer in the 400 characters allowed since each parasite is unique. You may find the following link helpful: https://www.cdc.gov/parasites/ in answering your homework assignment. ...Read more

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How long can it take for pneumonia to spread from just one lobe of one lung to all of both lungs and get into the blood stream?

How long can it take for pneumonia to spread from just one lobe of one lung to all of both lungs and  get into the blood stream?

Depends: If you are very young or elderly it can be very serious. If you have a strong immune system you may fight it longer. A lot depends on what organism is causing the pneumonia. Some are more aggressive than others. For some it may be a matter of hours and some it may be days. ...Read more

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Where is the esophagus in comparison to the heart and the aorta? The heart closest to the beast bone and then?

Where is the esophagus in comparison to the heart and the aorta? The heart closest to the beast bone and then?

Touch: The heart, aorta, and esophagus are intimate partners: they touch each other. The esophagus touches both the heart and parts of the aorta. (The aorta arises from the heart, arches and travels south behind the heart). ...Read more