Smoking and disease
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Atherosclerosis | The accumulation of fatty materials in artery walls, called
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| Angina Pectoris | Severe chest pain from exertion, will go away with rest and no damaged cause.
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| Myocardial infarction (heart attack) | Obstruction by blood clot, tissue starved of oxygen and tissue death will occur.
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| Heart failure | blockage, damage, gradual damage which makes the heart weak
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| Stroke | Loss of oxygen to specific part of brain. Artery in brain burst and leaks into brain tissue. Neurons are starved at oxygen and tissue death occurs (cerebral infarction). Goes from minor to mild to severe.
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| Nicotine | Increase in pressure, heart rate, and demand of oxygen. Absorbed by blood, travels to brain and stimulates vasoconstriction(decreases blood flow to extremities). Highly addictive.
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| Carbon monoxide | reduces haemoglobin ability to carry oxygen. Diffuses across walls of alveoli and into blood, forms carboxyhemoglobin. This replaces oxygen, damages the lining of arteries and reduces quantity of oxygen.
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| Stroke damage | damage will be determined by what part of brain is affected.
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| Thrombus | Rough surface of lining of an artery from plague breaking through lining, this leads to tissue starvation. Causes damage to the endothelium.
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| Tar | settles on lining of airways, stimulates changes lead to obstructive lung diseases and lung cancer.
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| Nicotine increases | increases stickiness of platelets and blood clotting along arteries.
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| Asthmatic attack | smooth muscles contract and this obstructs the flow of airways. this makes breathing difficult.
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| Severe coughing can lead to | to damage in the alveoli and it is replaced with scar tissue.
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| Tar stimulates | goblet cells and mucus glands to enlarge and secrete more mucus.
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| Tar destroys | cilia which makes them not present when cross section is examined.
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| Lung cancer | Tar has the carcinogens. It reacts directly or via breakdown products with DNA in epithelial cells to produce mutations leads to malignant tumor. Cancer spreads through bronchial epithelium and enters lymphatic tissues and metastasizes.
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| amount of time it takes for lung cancer develops | 20 to 30 yrs. Very big sign is coughing up blood.
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| Emphysema | The phagocytes will release a protein called elastase (digesting enzyme), destroying elastin (in lining of airways) reducing expansion and recoil or airways. Bronchioles collapse, alveoli will burst and leave spaces. Causes reduction of surface area.
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| More on emphysema | Exhalation of air will decrease from 4 dm^3 to 1 dm^3 leaves stagnant air (takes up space) in the lung with shallow and rapid breathing. Pulmonary arteries then increase in pressure which enlarges right ventricle.
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| Tobacco smoke contains | tar, carbon monoxide and nicotine.
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| the signs and symptoms of COPD | breathlessness, wheezing and constant coughing
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| symptoms of lung cancer | coughing up blood and chest pains
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| Smoking damages | the cardiovascular system, increasing atherosclerosis and increasing the risk of coronary heart disease and stroke.
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