Bios 255 Exam 3 2024 Verified Answers

IgD {Ans: -monomer -transmembrane protein of B cells -activation of B cells by antigens}Describe high compliance as it relates to healthy functions. {Ans: -ease with which the lungs and thoracic wall can be expanded High compliance= easy expansion Low compliance= resisted expansion}Describe the role of antigen presenting cells in immunity {Ans: -alert the immune system to presence of foreign antigen -detects, engulfs, and informs the adaptive immune response about an infection -when a pathogen is detected, APCs will phagocytose the pathogen and digest it to form many different fragments of the antigen}Describe IRDS ( Infant respiratory distress syndrome) and describe the interventions that would be used to help a newborn premature baby suffering from IRDS. {Ans: -leading cause of death in premature infants resulting from lack of surfactant production in alveoli -treated with artificial surfactant until they can make their own}Identify the PO2 measurements at the end of a normal inhalation ( breathing through the nose ) in each of the following: Respiratory bronchiole Alveolus Nasal cavity Trachea Bronchus {Ans: Respiratory bronchiole: 104mm Hg Alveolus: 104mm Hg Nasal cavity: atmospheric @ 159mm Hg Trachea: 104mm Hg Bronchus: 104mm Hg}Describe the Tonsils {Ans: -found in