Ati Teas Biology 2020 | Ati Teas Biology 2020 - 100% Correct

ATI Teas Biology 2020 What does the respiratory system do? 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? 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? Capillaries What is cilia? Tiny hairs in the nose and trachea that wave particles up away and out What is mucus? Something that keeps the air warm and moist but also traps particles How many alveoli does each lung have? 150 million What does hemoglobin do? Carries oxygen through the blood What is pleura? Sacs that surround the lungs What is the diaphragm? The muscle at the bottom of the thoracic cavity What happens during inhalation? Diaphragm moves down (contracts), rib cage rises, volume of chest cavity increases, air moves in to fill the space What happens during exhalation? Diaphragm moves up (relaxes), rib cage lowers, space becomes smaller, air is pushed out of lungs What does the medulla oblongata do? Controls breathing What is chronic bronchitis? Bronchi swell and become clogged with mucus Ati Teas What is emphysema? Tissues in lungs lose elasticity; tissues can't enough O2 or get rid of enough CO2 What is lung cancer? 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? Blood vessels are constricted, blood pressure rises, heart has to work harder, heart wears out more quickly What is cystic fibrosis? Genetic (recessive); lungs can get clogged with mucous