TEAS 7 Immune System
INNATE IMMUNE SYSTEM - Answer-
Is the innate system specific or nonspecific? - Answer-nonspecific because we are born with it
What is the innate system? - Answer-Nonspecific first line of defense against pathogens that is present
at birth
Is there potential for the innate system to "learn" from previous pathogens or adapt to new threats? -
Answer-NO
What are the 2 barriers to infection in the 1st line of defense of the innate system? - Answer-Mechanical
and chemical barriers
What are the 1st barriers of infection of the innate immune system? - Answer-Mechanical barriers:
- skin
- mucous membranes
What is the 2nd barrier of infection of the innate immune system? - Answer-Chemical barriers:
- stomach acid (low pH of gastric juice)
- lysozymes in tears
- interferons that block viral replication
- antimicrobial proteins (defensins, collectins, complements)
- phagocytes engulf pathogens
- destruction of infected cell by natural killer cell
,INNATE IMMUNE SYSTEM CELLS - Answer-
Neutrophils
(innate immunity) - Answer-Most of white blood cells in the bloodstream
Usually first to arrive at the site of infection
Chase pathogens using chemotaxis
Phgocytosis
Most of white blood cells in the bloodstream
Usually first to arrive at the site of infection
Chase pathogens using chemotaxis - Answer-Neutrohils
(innate immunity)
Eosinophils
(innate immunity) - Answer-Regulate inflammatory responses
Release chemicals that kill foreign invaders often parasite worms
Regulate inflammatory responses
Release chemicals that kill foreign invaders often parasite worms - Answer-Eosinophils
(innate immunity)
Mast cells
(innate immunity) - Answer-Found in connective tissue
Release histamine to promote inflammation and heparin to inhibit clotting
, Found in connective tissue
Release histamine to promote inflammation and heparin to inhibit clotting - Answer-Mast cells
(innate immunity)
Basophils
(innate immunity) - Answer-Circulate in the blood before entering tissues
Release histamine to promote inflammation and heparin to inhibit clotting
Circulate in the blood before entering tissues
Release histamine to promote inflammation and heparin to inhibit clotting - Answer-Basophils
(innate immunity)
Macrophages
(innate immunity) - Answer-Large WBCs that engulf debris and pathogenic microorganisms
Phagocytosis
Function as antigen presenters to effector T cells
Large WBCs that engulf debris and pathogenic microorganisms
Function as antigen presenters to effector T cells - Answer-Macrophages
(innate immunity)
Dendritic cells
(innate immunity) - Answer-Activate naive T cells
Phagocytosis
INNATE IMMUNE SYSTEM - Answer-
Is the innate system specific or nonspecific? - Answer-nonspecific because we are born with it
What is the innate system? - Answer-Nonspecific first line of defense against pathogens that is present
at birth
Is there potential for the innate system to "learn" from previous pathogens or adapt to new threats? -
Answer-NO
What are the 2 barriers to infection in the 1st line of defense of the innate system? - Answer-Mechanical
and chemical barriers
What are the 1st barriers of infection of the innate immune system? - Answer-Mechanical barriers:
- skin
- mucous membranes
What is the 2nd barrier of infection of the innate immune system? - Answer-Chemical barriers:
- stomach acid (low pH of gastric juice)
- lysozymes in tears
- interferons that block viral replication
- antimicrobial proteins (defensins, collectins, complements)
- phagocytes engulf pathogens
- destruction of infected cell by natural killer cell
,INNATE IMMUNE SYSTEM CELLS - Answer-
Neutrophils
(innate immunity) - Answer-Most of white blood cells in the bloodstream
Usually first to arrive at the site of infection
Chase pathogens using chemotaxis
Phgocytosis
Most of white blood cells in the bloodstream
Usually first to arrive at the site of infection
Chase pathogens using chemotaxis - Answer-Neutrohils
(innate immunity)
Eosinophils
(innate immunity) - Answer-Regulate inflammatory responses
Release chemicals that kill foreign invaders often parasite worms
Regulate inflammatory responses
Release chemicals that kill foreign invaders often parasite worms - Answer-Eosinophils
(innate immunity)
Mast cells
(innate immunity) - Answer-Found in connective tissue
Release histamine to promote inflammation and heparin to inhibit clotting
, Found in connective tissue
Release histamine to promote inflammation and heparin to inhibit clotting - Answer-Mast cells
(innate immunity)
Basophils
(innate immunity) - Answer-Circulate in the blood before entering tissues
Release histamine to promote inflammation and heparin to inhibit clotting
Circulate in the blood before entering tissues
Release histamine to promote inflammation and heparin to inhibit clotting - Answer-Basophils
(innate immunity)
Macrophages
(innate immunity) - Answer-Large WBCs that engulf debris and pathogenic microorganisms
Phagocytosis
Function as antigen presenters to effector T cells
Large WBCs that engulf debris and pathogenic microorganisms
Function as antigen presenters to effector T cells - Answer-Macrophages
(innate immunity)
Dendritic cells
(innate immunity) - Answer-Activate naive T cells
Phagocytosis
