| A | B |
|---|
| alcohol | a beverage that contains chemicals that cause changes in the way your body functions |
| brain | controls the nervous system |
| nervous system | nerves, spinal cord, brain work together to send messages throughout the body |
| perception | the way we look at the things and people around us |
| nerves | carry information from the brain to the rest of the body |
| spinal cord | part of the nervous system that connects the brain and the nerves |
| central nervous system | the spinal cord and the brain |
| peripheal nervous system | the nerves throughout the body |
| reaction time | the amount of time the brain and the body need to react to something |
| sensory nerves | nerves that carry information from our 5 senses to the brain |
| arteries | blood vessels that carry blood and oxygen from the heart to the rest of the body |
| atherosclerosis | a disease where fat deposits in arteries and clogs them |
| capillaries | the smallest blood vessels |
| carcinogens | chemicals that cause cancer |
| cardiovascular system | includes the heart, arteries, veins and capillaries; moves blood through your body |
| exhale | to breath air out of the body |
| inhale | to breath air into the body |
| pulmonary artery | carries blood with no oxygen from the right side side of the heart to the lungs |
| respiratory passages | tubes that connect the trachea to the lungs |
| pulmonary veins | veins that carry oxygenated blood from the lungs back to the left side of the heart |
| tar | a sticky substance in tobacco products |
| tobacco | a plant whose leaves are chewed, smoked or sniffed |
| veins | blood vessels that carry blood and carbon dioxide from the organs back to the heart |
| accumulate | to increase in number (to get more) |
| alveoli | tiny air scas in the lungs |
| bronchi | tubes that coonect the trachea to each lung |
| bronchioles | tubes that connect the bronchi to the alveoli |
| cumulative effect | an effect that increase over time |
| emphysema | a disease of the respiratory system caused by using tobacco |
| nicotine | an addictive chemical in tobacco |
| tobacco smoke pollution | unwanted tobacco smoke that is inhaled by a person that is not smoking |
| addiction | the need for a substance |
| peer pressure | when someone your age tries to get you to do something you don't want to do |
| drug | a substance that effects your body and is addictive |
