Doctor insights on:
What Is The Purpose Of The Respiratory System
Keep air sacs open: Surfactants, which are made by the body and are also available as a medication for babies who are deficient in them (usually premie), coat the inside of the tiny air sacs in the lung and keep them open when you exhale. Just like a collapsed balloon is hard to inflate, a collapsed air sac is hard to open. When it doesn't close completely, it's easier to open with the next breath. ...Read more
Interesting !?: Starting from the top: the lips, mouth, throat. trachea, larynx, right and left main stem bronchi, smaller bronchial passages and the tiny alveoli (where oxygen & carbon dioxide are exchanged) and the pulmonary vessels are all part of the respiratory system One of its most remarkable aspects is its ability to make speech and other sounds. There's no other like it in the animal kingdom. ...Read moreSee 2 more doctor answers
No: Exercise, especially aerobic activities, increases & improves both cardiology & pulmonary system, rather than wearing them down. In fact, a recent study concluded that better fitness in middle-age was linked to less lung & colon cancer & cancer death later on (http://oncology.jamanetwork.com/article.aspx?articleid=2203829). ...Read more
Get oxygen to blood: Respiration is the process of bringing oxygen into the lungs and exhaling carbon dioxide out of them. Once inside the lungs, the oxygen crosses cell membranes to get into the blood stream. The blood circulates the oxygen to the rest of the body including the brain which cannot function without it. Carbon dioxide is the waste product of well functioning cells and is also carried back by the blood. ...Read more
Many tests: Depending on the symptom, there are several tests to evaluate the respiratory system. A chest xray can be very instructive initially on lung structure. Pulmonary function tests (pft) tests different functional parts of the respiratory system. A chest ct can look more carefully at the tissue, blood vessels, and airways of the lung and chest. Sometimes, cardiopulmonary stress testing is helpful. ...Read more
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