PNB 2265 Exam 2 Study Guide | 150+ Questions and Answers on Immunology, Respiratory Physiology, Complement System & Gas Exchange

This comprehensive PNB 2265 Exam 2 Study Guide contains more than 150 expertly verified questions and answers covering major concepts in immunology, respiratory physiology, gas exchange, lymphatic function, and adaptive immune responses. The document provides detailed explanations of lymph nodes, lymphatic circulation, innate immunity, inflammatory responses, complement pathways, membrane attack complex (MAC) formation, opsonization, antigen presentation, T-cell and B-cell activation, helper and cytotoxic T-cell functions, MHC class I and II molecules, VDJ recombination, negative selection, and immune system regulation. It also reviews immune dysfunctions associated with HIV, autoimmune diseases such as Type 1 diabetes, and mechanisms of antibody-mediated immunity and antivenom therapy. The material further explores advanced respiratory physiology concepts including thoracic pressure changes during inspiration and expiration, lung compliance, respiratory distress syndrome, alveolar surface tension, Henry’s law, oxygen and carbon dioxide transport, the Bohr effect, respiratory alkalosis, intrapleural pressure dynamics, hyperventilation, and gas exchange within systemic capillaries. Additional concepts include pulmonary anatomy, conducting versus respiratory zones, diaphragm and intercostal muscle function, tracheal anatomy, and carbon dioxide solubility in plasma. The organized question-and-answer format simplifies difficult physiology and immunology topics while reinforcing understanding of complex defense mechanisms and respiratory processes commonly tested in university-level neuroscience and physiology courses. This study resource is highly beneficial for neuroscience students, physiology students, nursing students, biology majors, immunology students, pre-med students, respiratory therapy students, allied health learners, and healthcare science students preparing for exams, quizzes, cumulative finals, laboratory practicals, and advanced physiology coursework. The structured review format promotes active recall learning, strengthens conceptual understanding of immune and respiratory physiology, and improves retention of challenging biological systems and clinical applications. The content aligns with foundational immunology and respiratory physiology concepts commonly taught in undergraduate health science programs and reflects material referenced in academic textbooks including Janeway’s Immunobiology, Abbas Cellular and Molecular Immunology, Guyton and Hall Textbook of Medical Physiology, Human Physiology by Silverthorn, and Respiratory Physiology: The Essentials by John B. West. Topics related to innate and adaptive immunity, complement activation, antigen presentation, pulmonary ventilation, gas transport, acid-base balance, and respiratory mechanics are consistent with evidence-based educational standards used across neuroscience, physiology, biology, nursing, immunology, and healthcare science programs at colleges and universities. Keywords PNB 2265, immunology study guide, respiratory physiology, lymphatic system, lymph nodes, complement system, membrane attack complex, MAC attack, opsonization, innate immunity, adaptive immunity, inflammation, antigen presentation, helper T cells, cytotoxic T cells, B cells, MHC class 1, MHC class 2, VDJ recombination, negative selection, HIV immunology, autoimmune disease, Type 1 diabetes, antibodies, humoral immunity, antigen presenting cells, dendritic cells, natural killer cells, immune defense mechanisms, immunology exam questions, respiratory system physiology, pulmonary physiology, gas exchange, Henry law, Bohr effect, oxygen transport, carbon dioxide transport, respiratory alkalosis, hyperventilation, lung compliance, alveolar pressure, intrapleural pressure, alveolar surface tension, surfactant physiology, conducting zone, respiratory bronchioles, diaphragm function, intercostal muscles, thoracic cavity pressure, tracheal anatomy, pulmonary ventilation, respiratory mechanics, arterial oxygen transport, venous gas exchange, acid base balance, pulmonary gas diffusion, complement pathways, classical complement pathway, alternative complement pathway, immune response review, physiology exam review, neuroscience physiology, nursing physiology, respiratory therapy review, biology study guide, healthcare science review, pre med immunology, advanced physiology concepts, immune system regulation, inflammation physiology, pulmonary anatomy, adaptive immune response, respiratory physiology questions and answers