BIOD 151 EXAM 2 PORTAGE LEARNING QUESTIONS WITH 100% APPROVED CORRECT ANSWERS GRADED A+ 2025

BIOD 151 EXAM 2 PORTAGE LEARNING QUESTIONS WITH 100% APPROVED CORRECT ANSWERS GRADED A+ 2025 How many lobes does the left human lung have? -CORRECT ANSWER 2 air (and not food) pass in which of the following areas -CORRECT ANSWER nasopharynx in the respiratory system, gas exchange occurs in the -CORRECT ANSWER respiratory bronchioles and pulmonary alveoli explain what happens to the soft plate during swallowing -CORRECT ANSWER when it comes to swallowing many steps occur. first trachea is closed off so that no food or liquid are entering. It then moves inferiorly to cover the trachea. Prevents from entering the nasal passages as well. explain at least two differences between type I and type II alveolar cells -CORRECT ANSWER Type I form the very thin simple squamous epithelium of the alveoli in junction with capillaries. Make up roughly 95%of alveolar epithelial cells. Type II produce and secrete pulmonary surfactant which is needed throughout the alveolar surface to keep the alveoli open. In addition type II cells can divide to replace damaged type I cells. Make up roughly 5% of alveolar epithelial cells. T or F: positive pressure is used to move air into the lungs. -CORRECT ANSWER false negative pressure is used to bring air into the lungs t or f : during exhalation the diaphragm contracts to actively push air out of the lunch -CORRECT ANSWER false- during inhalation T or F: during inhalation the rib cage lifts in an upward motions to open and expland the lungs. -CORRECT ANSWER true T or F: as the thoracic cavity expands and lung volume increases, the density of the gases filling the lungs decreases -CORRECT ANSWER True T or F: As the rib cage expands during inhalation, air will naturally flow into the lungs -CORRECT ANSWER True According to Charles Law gas volume is -CORRECT ANSWER directly proportional to its temperature which one of the following tracheal cartilages are paired -CORRECT ANSWER arytenoid Which cells are most abundant within the alveoli -CORRECT ANSWER macrophages which one of the following is not true of the bronchioles? -CORRECT ANSWER bronchioles can contain fossae and mucus T or F: typical respiratory epithelium contains cells where only some of the pseudostratified columnar cells touch the basement membrane -CORRECT ANSWER False... All pseudostratified cells touch the basement membrane. T or F: the vestibule is the most external portion of the nasal cavity -CORRECT ANSWER true T or F: the vestibule is lined with typical respiratory epithelium -CORRECT ANSWER False. Stratified squamous epithelium is found in vestibule. T or F: because of diffusion, oxygen naturally moved out of the blood and into the lungs -CORRECT ANSWER false. which one of the follow is true of the respiratory physiology calculations? -CORRECT ANSWER Functional residual capacity (FRC)= RV+ ERV