ADN 120 IMMUNITY EXAM QUESTIONS AND ANSWERS GRADED A+ 2026

ADN 120 IMMUNITY EXAM QUESTIONS
AND ANSWERS GRADED A+ 2026




What is Immunity? - ANS the body's ability to resist disease


3 Functions immunity serves - ANS Defense
Homeostasis
Surveillance


2 types of Immunity - ANS innate
acquired


Innate Immunity - ANS Present at birth
First-line defense against pathogens


Acquired - ANS Developed Immunity
--Active & Passive


Types of Acquired Immunity - ANS naturally acquired and artificially acquired


Natural Acquired Immunity - ANS Active: Natural contact with antigen through actual
Infection (chickenpox, measles)

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, Passive: Transplacental & Colostrum transfer from mother to child


artificial acquired immunity - ANS Active: Immunizations


Passive: Injection of serum with antibodies from one person to another who doesn't have
antibodies (hep B)


Normal Immune Response : Antigens - ANS Substances the body recognizes as foreign that
elicit an immune response
Most are composed of protein.


Normal Immune Response: Antibodies - ANS Immune globulins produced by lymphocytes in
response to antigens


Lymphoid Organs : Central (primary) - ANS Thymus gland
Bone Marrow


Lymphoid Organs: Peripheral - ANS Lymph nodes
Tonsils
Spleen
Lymphoid tissues associated with gut, genitals, bronchi & skin


Mononuclear Phagocytes - ANS -Include monocytes in the blood and macrophages found
throughout the body
-Capture, process, and present antigens to lymphocytes to initiate an immune response
-Capture antigens by phagocytosis


Lymphocytes - ANS -Produced in bone marrow
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