ATI TEAS: Science

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 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