Health, 06.01.2020 10:31 DragonLovely

Explain how the heart and the lungs work together to supply the muscles with oxygen.
! i do not get it!

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Answer from: nlin4740

The primary role of the heart is to pump oxygenated blood around the body to the working muscles and organs. In order for this to occur, deoxygenated blood from the heart must pass through the lungs before it goes out tot eh rest of the body. Deoxygenated blood that has entered the heart is then immediately pumped into the lungs to become oxygenated, through diffusion of CO2 and O2 in the capillaries on the lung surface (sacs called alveoli). Once the O2 is picked up by the blood cells, it is then free to pass on throughout the body through the blood stream, to the working muscles. Here, oxygen will be exchanged for CO2 once again (this blood is now DEoxygenated), and will then return to the heart, and the process will start again.

Answer from: googoomylizard

The lungs obtain oxygen when it passes through the bronchioles, which are small "passageways" in your lungs. Once this oxygen is obtained, it is delivered to the blood. The heart then pumps that blood around your body to circulate it. The blood is delivered to the capillaries in muscles. All of the unnecessary gasses are then expelled from your lungs. This process then repeats itself.

Answer from: Quest

however, coronary heart disease , or chd, is actually a result of coronary artery disease, or cad, said edward a. fisher, m.d., ph.d., m.p.h., an american heart association volunteer who is the leon h. charney professor of cardiovascular medicine and also of the marc and ruti bell vascular biology and disease program at the nyu school of medicine.

with coronary artery disease, plaque first grows within the walls of the coronary arteries until the blood flow to the heart’s muscle is limited. view an illustration of coronary arteries. this is also called ischemia. it may be chronic, narrowing of the coronary artery over time and limiting of the blood supply to part of the muscle. or it can be acute, resulting from a sudden rupture of a plaque and formation of a thrombus or blood clot.

the traditional risk factors for coronary artery disease are high ldl cholesterol, low hdl cholesterol, high blood pressure, family history, diabetes, smoking, being post-menopausal for women and being older than 45 for men, according to fisher. obesity may also be a risk factor.

“coronary artery disease begins in childhood, so that by the teenage years, there is evidence that plaques that will stay with us for life are formed in most people,” said fisher, who is former editor of the american heart association journal, atvb. “preventive measures instituted early are thought to have greater lifetime benefits. healthy lifestyles will delay the progression of cad, and there is hope that cad can be regressed before it causes chd.”

living a healthy lifestyle that incorporates good nutrition, weight management and getting plenty of physical activity can play a big role in avoiding cad.

“coronary artery disease is preventable,” agreed johnny lee, m.d., president of new york heart associates, and an american heart association volunteer. “typical warning signs are chest pain, shortness of breath, palpitations and even fatigue.” if you feel any of these symptoms, don’t delay — call 9-1-1.

Answer from: Quest

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Explain how the heart and the lungs work together to supply the muscles with oxygen.
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