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Across 6. strong muscle that pumps blood throughout the body; nicotine causes it to speed up, leading to high blood pressure, heart attacks, and strokes 8. tiny sacs found at the end of each bronchiole; this is where oxygen moves into the blood and carbon dioxide moves out of the lungs 10. tubes that carry blood to all parts of the body; nicotine causes it to become hard and rigid, leading to high blood pressure, heart attacks, and strokes 11. special cells that allow the brain to communicate with the body; nicotine causes the heart to speed up unnecessarily, leading to heart disease

Down 1. tube which delivers air from the voice box into the bronchial tubes 2. little hair cells that line the respiratory system, from nose to bronchioles; they clean the incoming air; smoking slows and then destroys these 3. tubes which branch off the trachea and deliver air to the bronchioles; dirty mucous collects in the tubes, causing them to become infected and inflamed, resulting in a disease called bronchitis 4. tiny air tubes found branching off bronchial tubes; cilia that line these tubes die, causing mucous to build up, coughing will cause air sacs to break, resulting in a disease called emphysema 5. stimulant drug found in tobacco; speeds up various parts of the body, causing innecessary functioning faster than normal; leads to heart disease in excessive amounts 7. thick fluid which lines the respiratory system; traps dirt and bacteria as air enters the body; tobacco use can cause it to collect in the windpipe making it difficult to breathe 9. a plant which produces leaves that can be smoked, chewed, or sniffed; when burned, various agents can harm the body or cause various diseases