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The function of plasma cells is to


A) produce more B-cells
B) phagocytize bacteria
C) produce antibodies
D) stimulate clones of T-cells

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All of the following are part of nonspecific defense EXCEPT


A) lymphocytes
B) mechanical barriers
C) inflammation
D) phagocytosis
E) chemical action of complement

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T-lymphocytes differentiate in the


A) thymus
B) thyroid
C) tonsils
D) trachea
E) spleen

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The action of interferon offers some protection against


A) inflammation
B) bacteria
C) skin infections
D) viruses
E) suppressor T-cell action

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Vaccines are used to provide passive artificial immunity.

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Immunity that you obtain by producing antibodies against a specific pathogen is _____ immunity.


A) passive
B) primary
C) active
D) artificial

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All of the following are components of the lymphatic system EXCEPT


A) tonsils
B) thymus
C) spleen
D) liver

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Immunoglobulins are antibodies.

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Two characteristics of specific defense mechanisms are


A) lymphocytes and macrophages
B) specificity and memory
C) T-cells and B-cells
D) natural and artificial immunity
E) barriers and chemicals

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What is the term for the type of immunity obtained when an infant receives IgA antibodies from mother's milk?

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passive na...

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The type of T-cell that stimulates the activation of B-lymphocytes is the _____ T-cell.


A) suppressor
B) helper
C) memory
D) killer

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The lymphatic organ that is located in the mediastinum,just anterior to the ascending aorta,is the


A) cardiac lymph node
B) aortic tonsil
C) thoracic duct
D) thymus

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Neutrophils and lymphocytes are the primary phagocytic cells in the body's defense mechanism.

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Lymphadenotomy is


A) stopping the flow of lymph
B) study of lymph vessels
C) inflammation of lymph glands
D) incision into a lymph gland
E) formation of lymph

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Clusters of lymphatic tissue that intercept microorganisms that may enter through the nose and mouth are called


A) lymph nodes
B) tonsils
C) splenic nodules
D) thymus
E) Peyer's patches

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