ATI TEAS SCIENCE EXAM 2023-2024 COMPREHENSIVE EXAM QUESTIONS AND ANSWERS NEWEST VERSION!!! What does the respiratory system do? - ANSWERS- 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? - ANSWERS- 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? - ANSWERS- Capillaries What is cilia? - ANSWERS- Tiny hairs in the nose and trachea that wave particles up away and out What is mucus? - ANSWERS- Something that keeps the air warm and moist but also traps particles How many alveoli does each lung have? - ANSWERS- 150 million What does hemoglobin do? - ANSWERS- Carries oxygen through the blood What is pleura? - ANSWERS- Sacs that surround the lungs What is the diaphragm? - ANSWERS- The muscle at the bottom of the thoracic cavity What happens during inhalation? - ANSWERS- Diaphragm moves down (contracts), rib cage rises, volume of chest cavity increases, air moves in to fill the spaceWhat happens during exhalation? - ANSWERS- Diaphragm moves up (relaxes),