Smoking and Your HealthChapter 11. 2

What’s in tobacco smoke?•Some of the most deadly chemicals in

tobacco smoke areTAR,

CARBON MONOXIDE,and

NICOTINE.

TAR•Dark sticky substance that forms

when tobacco burns•Causes the cilia to clump together;

prevents cilia from functioning

CARBON MONOXIDE•Produced when substances in tobacco

are burned•Colorless odorless gas

NICOTINE•Stimulant drug •Increases the activities of the nervous

system and heart (increases heart beats and blood pressure)

•Addiction: physical dependence

HEALTH PROBLEMS AND SMOKING

•Common health problems induced by smoking are

CHRONIC BRONCHITIS,EMPHYSEMA,

AndLUNG CANCER.

CHRONIC BRONCHITIS•Irritation of breathing passages due

to air passages being clogged by mucus. (air passages are smaller)

•If the irritation continues for a long period of time it is chronic. This can cause permanent damage.

EMPHYSEMA•Serious disease that destroys lung

tissue and causes breathing difficulties

•For some people it becomes difficult to even blow out a match.

LUNG CANCER•Cigarettes contains more than 50

different chemicals that can cause cancer

•The cancer cells take away space in the lungs that is used for gas exchange.

ATHEROSCLEROSIS•Physical condition in which chemicals from tobacco smoke are absorbed by blood vessels.

•Those chemicals lead to a buildup of fatty material inside blood vessel.

•High increase of potential for heart attacks

•SMOKERS ARE MORE THAN TWICE AS LIKELY TO HAVE HEART ATTACKS.

PASSIVE SMOKING/2ND HAND SMOKE•Associated with the development of

bronchitis and other respiratory problems in about 300,000 young children in the U.S. each year.