Exam 3: BIOS 255 / BIOS255 (2024/ 2025
Update) Anatomy and Physiology III
Complete Guide | 100% Correct| Grade A -
Chamberlain
What are the functions of the immune system? - ANSWER Protect the
body from and fight off pathogens
Innate immunity - ANSWER Immune defense mechanisms you are
born with
Non specific resistance
What is the first line of defense? - ANSWER Physical and chemical
barriers
What are examples of physical and chemical barriers? - ANSWER Skin
Mucous membranes
Sebum
Perspiration
,What is the second line of defense? - ANSWER Inflammation
Interferon
Compliment
Fever
Nk cells
Phagocytosis
What is the third line of defense? - ANSWER Adaptive immunity or
specific resistance
What are two parts of the third line of defense? - ANSWER Cell
mediated immunity
Antibody mediated immunity
What are the two types of non phagocyte killing - ANSWER
Granulocytes( neutrophils and eosinophils)and nk cells
, What are the granulocytes that don't use phagocytosis? - ANSWER
Neutrophils bacteria
Eosinophils parasitic worms, allergies and inflammation
Both by means of chemical release
How do nk cells work? - ANSWER Recognition and attachment
Secretion of performing and granzymes
Lysis and detachment
How Is the process of phagocytosis? - ANSWER Chemotaxis
Adhesion
Engulfment
Formation of phagosome
Add digestive enzymes to vesicle with the pathogen killing the pathogen
Endocytosis of the residual body
What are the four cardinal signs of inflammation? - ANSWER redness,
heat, swelling, pain
What are pyrogens? - ANSWER Cause a fever
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