BSN 225 Infection Latest Update 2025 Fully Solved

BSN 225 Infection Latest Update 2025 Fully Solved Question 1 of 3 Which living substance functions as an antigen? Toxins Chemicals Drugs Proteins - Answers Proteins Proteins are living substances that function as antigens. Question 2 of 3 Which type of immunity serves as the body's first line of defense by providing immediate protection against foreign antigens? Active immunity Passive immunity Adaptive immunity Innate immunity - Answers Innate immunity Innate immunity serves as the body's first line of defense and provides immediate protection against foreign antigens. Question 3 of 3 Which term describes a microorganism that causes serious disease? Pathogen Antigen Virulent Invasive - Answers Pathogen Pathogens are potentially dangerous microorganisms that can cause serious illness when they gain entry into the host. Question 1 of 4 Which mechanism explains how normal flora protects against infection? Inhibits microorganisms from colonizing Prevents pathogens from entering circulation Destroys infectious agents on body surfaces Neutralizes and eliminates foreign antigens - Answers Inhibits microorganisms from colonizing Normal flora are the body's first line of defense, and it inhibits pathogenic microorganisms from colonizing in healthy individuals. Question 2 of 4 Which body system has proteins with antimicrobial properties and promotes phagocytosis? Respiratory system Gastrointestinal system Integumentary system Musculoskeletal system - Answers Respiratory system The respiratory system has proteins with antimicrobial properties and promotes phagocytosis. Question 3 of 4 Which areas of the body typically contain normal flora? Select all that apply. Skin Mouth Lungs Upper throat Bloodstream Small intestine - Answers Skin Mouth Upper throat Small intestine Question 4 of 4 Place the sequence of events for the inflammatory response in the correct order. Capillary dilation Warmth and redness Increased capillary permeability Swelling and pain Exudate formation Correct Answer Exactly! The signs and symptoms of inflammation are produced by three mechanisms that occur in a specific sequence that begins with capillary dilation and ends with repair and healing. - Answers Question 1 of 3 Which immune response is mediated by circulating antibodies that coat antigens and target them for destruction? Humoral immunity Innate immunity Adaptive immunity Cellular immunity - Answers Humoral immunity Humoral immunity is also known as antibody-mediated immunity. It uses specialized cells to produce antibodies that respond to foreign antigens or pathogens. Question 2 of 3 Which cells are responsible for the production of antibodies? T-helper cells Phagocytes B lymphocytes Macrophages - Answers B lymphocytes B lymphocytes are responsible for the production of antibodies. Question 3 of 3 Which adaptive immune system cells release interleukins to stimulate antibody production by B cells? Complements Macrophages T-helper cells Basophils - Answers T-helper cells T-helper cells release interleukins and other substances that stimulate antibody production by B cells and antigen destruction by other cells. Question 1 of 9 Which function would a nurse recognize as an adaptive immune response? Initiating the inflammatory response