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SCIENCE 101 > ATI > Ati Teas, ATI TEAS: Science (All)

Ati Teas, ATI TEAS: Science

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What does the respiratory system do? -answer-Brings in oxygen to go into the cells, and picks up carbon dioxide to be removed from the bodyguard What are the 7 parts of the respiratory system? -ans ... wer-1. Nose 2. Pharynx 3. Larynx (voice box) 4. Trachea (windpipe) 5. Bronchi 6. Bronchioles 7. Alveoli What are alveoli surrounded by to allow the exchange of O2 and CO2? -answer-Capillaries What is cilia? -answer-Tiny hairs in the nose and trachea that wave particles up away and out What is mucus? -answer-Something that keeps the air warm and moist but also traps particles How many alveoli does each lung have? -answer-150 million What does hemoglobin do? -answer-Carries oxygen through the blood What is pleura? -answer-Sacs that surround the lungs What is the diaphragm? -answer-The muscle at the bottom of the thoracic cavity What happens during inhalation? -answer-Diaphragm moves down (contracts), rib cage rises, volume of chest cavity increases, air moves in to fill the space What happens during exhalation? -answer-Diaphragm moves up (relaxes), rib cage lowers, space becomes smaller, air is pushed out of lungs What does the medulla oblongata do? -answer-Controls breathing What is chronic bronchitis? -answer-Bronchi swell and become clogged with mucus What is emphysema? -answer-Tissues in lungs lose elasticity; tissues can't enough O2 or get rid of enough CO2 What is lung cancer? -answer-Cells that do not stop reproducing; can spread to other locations because lungs are so central and connected to so much; survival is generally less then 5 years from diagnosis What is heart disease? -answer-Blood vessels are constricted, blood pressure rises, heart has to work harder, heart wears out more quickly What is cystic fibrosis? -answer-Genetic (recessive); lungs can get clogged with mucous [Show More]

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