Post on 14-Dec-2015
Smoking
What’s in a cigarette Nicotine: The addictive drug in cigarettes Stimulant: Is a drug that increases the
action of the central nervous system Tar: Is a thick, sticky, dark fluid produced
when tobacco burns. This tar consists of many cancer causing substances known as carcinogens
What’s in a cigarette Carbon Monoxide: Is a colorless, odorless,
poisonous gas in cigarette smoke that passes through the lungs and into the blood.
The gas unites with the hemoglobin and prevents it from caring oxygen.
Statistics from the American Lung Association
Cigarette smoke contains over 4,800 chemicals, 69 of which are known to cause cancer.
About 8.6 million people in the U.S. have at least one serious illness caused by smoking.
Secondhand smoke involuntarily inhaled by nonsmokers is responsible for approximately 3,000 lung cancer deaths annually.
In 2004, 22% of high school students were current smokers.
Smoking Effects on the lungs
How the circulatory system works
The Healthy Lung Anatomy & Physiology
of the lungs.
Chronic Bronchitis Chronic bronchitis: is
the inflammation and eventual scarring of the lining of the bronchial tubes. As the cilia become useless, tar from cigarette smoke builds up, which results in coughing and excessive mucus secretion.
Pulmonary Emphysema In emphysema, the
fine dividing walls between the tiny air sacs break. The sacs balloon out to become large pockets of air with hard inflexible walls.
Lung Cancer Cancer is an area of
uncontrolled cell growth that invades the surrounding tissue and destroys it. This is due to the build up of tar in the lungs.
Chronic Bronchitis & Pulmonary Emphysema
Smoking and the Circulatory System
Constricts blood vessels Plaque builds up in arteries Makes heart work harder Increase chance of heart disease Increase chance of stroke Increase blood pressure
Other effects of smoking Shuts down circulation in small vessels
causing cold hands and feet. Wrinkling of skin, especially the face Interferers with immune response making
colds more likely Yellow teeth and tongue Odor
Other effects of smoking Makes it likely that men will produce
abnormal sperm Causes women to become infertile Smoking & Pregnancy
Effects of smoke on young children In the U.S. 21 million children live in homes
where residence or visitors smoke in the home on a regular basis.
Children of smokers tend to have a higher incidence of sore throats, ear infections, and upper respiratory problems.
Children who live with smokers have double the risk of developing lung cancer.
Children of smokers are nearly 3 times as likely to smoke.
Effects of smoke on unborn children and infants
Can impair fetal growth. Miscarriages Prenatal death Premature delivery Low birth weight Deformities Growth & Developmental problems
throughout early childhood. Stillbirths