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Inside the alveoli, oxygen moves across the paper-thin walls to the capillaries, the tiny blood vessels, and then into the blood, where it is picked up by chemicals, haemoglobin, in the red blood cells ready to be carried throughout the body (Way pp). At the same time, waste products from the body, in the form of carbon dioxide, come out of the capillaries back into the alveoli, ready to be breathed out (Way pp). Freshly oxygenated blood is carried from the lungs to the left side of the heart which pumps blood around the body through the arteries, and once the oxygen is used up, the blood returns, through the veins, to the right side of the heart (Way pp). From there, it is pumped to the lungs so that the carbon dioxide can be removed and more oxygen taken in (Way pp).
Every day, some 10,000 liters of air move in and out of the lungs, carrying germs and other foreign bodies as well as oxygen (Way pp). Thus,...
Tiny hairs line the bronchi and help waft unwanted materials up to the mouth (Way pp). Mucus produced in the walls of the airways helps to keep them clean and well lubricated, and cells in the lungs contain enzymes that produce chemical changes in the blood (Way pp).
The delicate structure of the lungs is perfectly adapted to carry out the complex job of breathing and, al the same time, aids in protecting the body from outside attack (Way pp). Yet, the lungs can be damaged, for example, by cigarette smoke, air pollution, and occupational gases and dusts (Way pp). Damage to the lungs can lead to breathlessness and disease (Way pp).
Works Cited
The Way Our Lungs Work. British Lung Foundation. http://www.lunguk.org/the-way-our-lungs-work.asp
Works Cited
The Way Our Lungs Work. British Lung Foundation. http://www.lunguk.org/the-way-our-lungs-work.asp
diseases i.e. lung cancer, childhood leukemia, obesity and Alzheimer's disease. In each explanation, I have included a definition of the disease, risk factors, treatments, prognosis, and prevention. Later, I have provided short literature reviews of four articles. Lung Cancer Lungs are those organs in the body that help the human beings to breathe i.e. inhale and exhale oxygen. Their primary function is to provide oxygen to every cell in the body.
It also requires us to be involved in that region of the world in very costly ways that would not matter but for our dependence on Middle Eastern oil. We are now at the point where the next generation of Americans or the one immediately after the next generation will experience the complete depletion of the world's available oil reserves. Even before the oil finally runs out, its price will
Furthermore, subjective feelings of fatigue can be inconsistent with performance (Holding, 1983), sometimes exhibiting a greater sensitivity to sleep loss than the performance measures (Haslam, 1981). While different studies have produced variable results about the effects of fatigue inducing elements in flight performance and aviation errors, yet there is on the whole general agreement among researchers that fatigue is negative factor in aviation, particularly when it comes to military operations.
Air Pollution The air that surrounds us is a mixture of 78% nitrogen; 21% oxygen; less than 1% of carbon dioxide, argon, and other gases; and varying amounts of water vapor. Any other particles, gases or unoriginal constituents hanging in the air which are not part of its original composition are called 'Pollutants' and this kind of air is called Polluted Air. Even inhaling small amounts of such air pollutants can
The presence of cardiac enzymes in the blood often indicates myocardial necrosis. Medical experts generally view MI as one among acute coronary syndromes. Unstable angina and non-ST-elevation MI are among the syndromes. Statistics said that approximately 1.5 million cases come up each year. MI is a cardiovascular condition. About 12 million deaths worldwide each year are attributed to cardiovascular diseases as cause, according to the World Health Organization. These
Rinpoche In The Tibetan Book of Living and Dying, Sogyal Rinpoche (2002) distills the essence of Tibetan Buddhist teachings into a format digestible for a modern Western audience. The central premise of The Tibetan Book of Living and Dying is that death can be a "teaching for us all," (Rinpoche, 2002, p. 3). The title of Rinpoche's book refers to the Tibetan Book of the Dead, which describes the bardo, of