BIOD 151 Module 2 Exam

BIOD 151 Module 2 Exam 2020 - Portage Learning M2: Exam- Requires Respondus Lock Down Browser How many lobes does the right human lung have? Your Answer: Three lobes. Three Lobes Air and food pass in which one of the following areas: Trachea Nasopharynx Oropharynx Alveoli Rings of cartilage line much of the respiratory tract. In which of one the following would cartilage NOT be found? Trachea Larynx Bronchi Alveoli Label the following five items from the diagram: Label B- Label D- Label E- Label F- Label G- Your Answer: Label B- Oral Cavity Label D - Epiglottis Label E- Glottis Label F- Trachea Label G- Esophagus Label B- Oral Cavity Label D- Epiglottis Label E- Glottis Label F- Trachea Label G- Esophagus Note: Essay answers must clearly be in your own words. Explain what happens to the epiglottis during swallowing. Why? Your Answer: When 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. The trachea is closed by the epiglottis. The epiglottis moves inferiorly, covering the trachea. This is to prevent food or liquid from entering the lungs. Note: Essay answers must clearly be in your own words. Explain at least two differences between Type I and Type II alveolar cells. Your Answer: The type I cells is a complex branched cell with multiple cytoplasmic plates that are greatly attenuated and realatively devoid of organelles. Type I cells the very thin simple squamous epithelium of the alveoli junction with capillaries. Make up roughly 95 % of aleveolar epithelial cells.