Fluids build up in the lungs due to toxin exposure, certain medications, heart problems and other serious medical conditions, according to the New Health Guide. Fluid in the lungs, called pulmonary edema, can result in a life-threatening condition. With pulmonary edema, the abnormal build up of fluid in the small air sacs of the lungs interferes with air flow.Know More
The lungs contain 300 million air sacs, called alveoli. These tiny air sacs absorb oxygen when a person inhales and release carbon dioxide when a person exhales, according to the New Health Guide. When fluid fills the lungs, it becomes trapped in the alveoli and causes difficulties in breathing.
Numerous health problems cause fluid in the lungs, including cardiac problems. The New Health Guide lists coronary artery disease, cardiomyopathy, heart valve issues and high blood pressure as common cardiac causes. When the heart fails to work properly, it affects the lungs. Coronary artery disease can weaken the heart so that it does not pump blood as hard as it should. The reduced blood flow causes the blood to back up into the lungs, and the fluid in the blood passes into the air sacs. This results in pulmonary edema. Non-cardiac causes include pneumonia, toxins exposure, kidney disease, smoke inhalation and medication reaction, as well as, living at high elevations and other types of lung infections.Learn more in Organs
Pulmonary alveoli are the tiny sacs inside the lungs that fill with air with each breath and facilitate the exchange of gas with the blood. According to HowStuffWorks, the oxygen concentration in the alveoli is high, relative to that of the surrounding tissues, which permits easy passage to the blood.Full Answer >
The respiratory membrane allows gases to be exchanged between the pulmonary capillaries, or blood vessels, and the respiratory units of the lungs, which consist of bronchioles, alveolar ducts, atria and alveoli, according to John E. Hall in the Guyton and Hall Textbook of Medical Physiology. This exchange transports oxygen from the alveoli into red blood cells and carbon dioxide from blood cells into the alveoli.Full Answer >
Terminal bronchioles are the air passages into the lungs. They branch into respiratory bronchioles and secrete a nonsticky surfactant to maintain the airway. Surfactant is a proteinaceous compound that maintains the airway in the smallest bronchioles and alveoli by keeping surface tension during inspiration and keeping them from collapsing during expiration.Full Answer >
The heart is the muscular organ situated in between the lungs, behind the sternum and slightly tilted towards the left side of the breastbone. Rhythmic muscular contractions activate the heart to pump blood through a system of arteries and veins called the cardiovascular system.Full Answer >