MICR 270 Module 2 Exam Study Guide With
Complete Solutions
innate - ANSWER this branch of the immune system is the first line of defence, is
non-specific, and fights all pathogens the same way
physical, cellular, soluble - ANSWER what are the 3 types of immune barrier in the innate
immune system
skin and mucous membranes - ANSWER what are the 2 main parts of the physical barrier
in the innate immune system
skin - ANSWER the largest organ in the body
cilia - ANSWER the hair like structures that can trap particles in the mucous membranes
tears and saliva - ANSWER what are 2 examples of mucous membrane secretions
lysozyme - ANSWER what is the active antimicrobial substance in mucous membrane
secretions that destroys the cell walls of bacteria
gastric acid - ANSWER what antimicrobial substance destroys most bacteria that after
the stomach
, neutrophils, macrophages, dendritic cells, NK cells - ANSWER what are the 4 major
immune cells involved in the innate immune response
extravasation - ANSWER how neutrophils enter tissue at site of infection
1-3 days - ANSWER how long do neutrophils last once recruited to the site of infection
neutrophil - ANSWER this cell circulates in the blood until they are recruited to the site
of infection to engulf pathogens
macrophage - ANSWER this cell patrols the body, contributes to tissue repair, presents
antigens, and becomes activated after phagocytosing
dendritic cell - ANSWER this cell is the major antigen presenter, a major link between the
innate and adaptive immune systems
NK cell - ANSWER this cell recognizes and destroys abnormal cells (ex tumour and virus
infected cell) through cell lysis
complement system and cytokines - ANSWER the 2 main categories of the soluble
barrier
Complete Solutions
innate - ANSWER this branch of the immune system is the first line of defence, is
non-specific, and fights all pathogens the same way
physical, cellular, soluble - ANSWER what are the 3 types of immune barrier in the innate
immune system
skin and mucous membranes - ANSWER what are the 2 main parts of the physical barrier
in the innate immune system
skin - ANSWER the largest organ in the body
cilia - ANSWER the hair like structures that can trap particles in the mucous membranes
tears and saliva - ANSWER what are 2 examples of mucous membrane secretions
lysozyme - ANSWER what is the active antimicrobial substance in mucous membrane
secretions that destroys the cell walls of bacteria
gastric acid - ANSWER what antimicrobial substance destroys most bacteria that after
the stomach
, neutrophils, macrophages, dendritic cells, NK cells - ANSWER what are the 4 major
immune cells involved in the innate immune response
extravasation - ANSWER how neutrophils enter tissue at site of infection
1-3 days - ANSWER how long do neutrophils last once recruited to the site of infection
neutrophil - ANSWER this cell circulates in the blood until they are recruited to the site
of infection to engulf pathogens
macrophage - ANSWER this cell patrols the body, contributes to tissue repair, presents
antigens, and becomes activated after phagocytosing
dendritic cell - ANSWER this cell is the major antigen presenter, a major link between the
innate and adaptive immune systems
NK cell - ANSWER this cell recognizes and destroys abnormal cells (ex tumour and virus
infected cell) through cell lysis
complement system and cytokines - ANSWER the 2 main categories of the soluble
barrier
