BIOD 151 module 2 exam Portage learning WINTER 2024

how many lobes does the left human lung have 2 2. air (and not food) pass in which of the following areas a. esophagus b. nasopharynx c. oropharynx d. both A and C nasopharynx 3. in the respiratory system, gas exchange occurs in the ___ respiratory bronchioles and pulmonary alveoli 4. explain what happens to the epiglottis during swallowing. why? epiglottis moves inferiorly to cover the trachea to prevent food/liquid from entering lungs 5. explain at least two differences between Type I and Type II alveolar cells 1. type I makes up 95% of alveolar epithelium with type II makes up 5% 2. type I forms a thin simple squamous epithelium of the alveoli in junction with capillaries while type II is dispersed throughout type I cells and function to produce and secrete pulmonary surfactant and divide to replace type I cells 6. true or false: negative pressure is used to move air into the lungs true