BIOD 151 Module 2 Portage Learning Exam With Questions and Answers 100% Verified

BIOD 151 Module 2 Portage Learning Exam With Questions and Answers 100% Verified How many lobes does the right human lung have? - answerthree lobes Air and food pass through which area? - answerOropharynx Rings of cartilage line much of the respiratory tract. In which of the following can cartilage NOT be found? - answerTrachea Larynx Bronchi Alveoli (Alveoli) Label B Label D Label E Label F Label G - answerB - Oral cavity D - Epiglottis E - Glottis F - Trachea G - Esophagus Explain what happens to the Epiglottis during swallowing. Why? - answerWhen we swallow the Epiglottis moves to block the entrance of food particles into our larynx and lungs. The muscles of the Larynx pull upward to assist with this movement. They tightly close during swallowing. This prevents food from entering our lungs. OR Trachea is closed by the Epiglottis. The Epiglottis moves inferiorly, covering the trachea. This is to prevent food or liquid from entering the lungs. Explain atleast TWO differences between Type I and Type II Alveolar cells - answera. Type I form the very thin simple squamous epithelium of the alveoli in junction with capillaries. Make up roughly 95% of alveolar epithelial cells. b. 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. Makeup roughly 5% of alveolar epithelial cells. Positive pressure is used to move air into the lungs (T/F) - answerTrue During inhalation the diaphragm contracts to pull the lungs open (T/F) - answerTrue During inhalation the ribcage lifts in an upward motion to open and expand the lungs (T/F) - answerTrue As the thoracic cavity expands and lung volume increases, the density of the gases filling the lungs decreases (T/F) - answerTrue