When we breathe, air enters the upper airway through the nose and mouth where the air is filtered. The inhaled air travels though the trachea to the lungs. Inside the lung there is a main stem called the bronchus and little air sacs called bronchioles. Oxygen is exchanged for carbon dioxide in the blood. The blood then carries oxygen to all the body tissues. (Sherman 355) The respiratory s

Smoking has a lot of affects that are harmful to the body. Smoking might not affect the body instantly but looking towards to future smoking has a great impact on ones life. As a smoker gets older the diseases they forced upon themselves from smoking at an earlier age will severely hurt them and in fact it might kill them at a far earlier age then they were supposed to go. Before you light up your cigarette remember what you are doing to you body.

Quitting will rapidly decrease the risk of developing heart disease, but long-term smoking may still permanently damage arteries. Studies continue to confirm the dangers of second hand smoke. One study reported that exposure to second hand smoke is just as dangerous in the workplace as it is at home. Regular exposure to passive smoke is now estimated to increase the risk of heart disease in the nonsmoker by between 25% and 91% causing 30,000 to 60,000 deaths each year. According to one report nonsmokers who spend as little as a half-hour in a smoke- filled room suffer a serious drop in blood levels of antioxidants, such as vitamin C, which may be important for heart protection. (Whelan 26-32) Studies have now linked cigarette smoking to infertility and Miscarriage. (Whelan 81) Women a greatest risk are those who smoke one or more packs a day and who started smoking before age 18. Smoking increases the risk for stillbirth and infant death by 33%. Smoking also appears to reduce !

folate levels which is a vitamin that is important for preventing birth defects. (Stillman 545) Experts believe that women who smoke may pass genetic mutations that increase cancer risks to their unborn babie

Some topics in this essay:
Effects Humans, Peterson Twenty, SIDS Parental, Miscarriage Whelan, heart disease, women smoke, cigarette smoking, produce mucus, increases risk, low birth weight, risk low birth, smoke increase, upper airway, infant death, lung tissue, pregnant women,