B Cell Differentiation and Immune Response Quiz

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What is the function of lymph nodes?

Secretion of antibodies
Storage of blood cells
Filtration of lymph to remove debris and pathogens (correct)
Production of lymphocytes

What is the primary role of tonsils in the immune system?

Filtering blood
Developing immunity to oral pathogens (correct)
Storage of pathogens
Production of antibodies

Where are mucosa-associated lymphoid tissues (MALT) found?

Brain tissue
Breast tissue, lungs, and eyes (correct)
Bone marrow
Muscles

What is the main characteristic of lymphoid nodules?

Lack of a fibrous capsule (B) Signup and view all the answers

What makes the spleen known as the 'filter of the blood'?

Presence of dendrites and macrophages (A) Signup and view all the answers

Which vessels enter the lymph nodes?

Afferent lymphatic vessels (D) Signup and view all the answers

What is the primary function of plasma cells?

To secrete soluble antibodies (C) Signup and view all the answers

Where do B cells mature and develop?

In the red bone marrow (D) Signup and view all the answers

Which of the following statements about the thymus is correct?

It may be completely absent at the age of 120. (A) Signup and view all the answers

Which of the following is NOT considered a secondary lymphoid organ?

Bone marrow (C) Signup and view all the answers

What is the primary function of Natural Killer (NK) cells?

To serve as the first line of defense against viruses and some cancers (A) Signup and view all the answers

What is the characteristic of Type 1 hypersensitivity reactions?

Involves IgE binding to mast cells causing degranulation (C) Signup and view all the answers

How are Type 2 hypersensitivity reactions typically triggered?

Mismatched blood transfusions (A) Signup and view all the answers

What is the characteristic of Type 3 hypersensitivity reactions?

Systemic disease with accumulation of antigens and antibodies along blood vessel linings (B) Signup and view all the answers

How are autoimmune diseases typically treated?

With immunosuppressive drugs and anti-inflammatories (A) Signup and view all the answers

What must match in an organ transplant to increase the likelihood of its success?

Mismatched MHC alleles (C) Signup and view all the answers

What is the role of a healthy immune system in controlling cancers?

Controlling some cancers (B) Signup and view all the answers

What is the primary function of bronchus-associated lymphoid tissue (BALT)?

To provide an effective immune response against inhaled pathogens (C) Signup and view all the answers

Which of the following is NOT a component of the innate immune response?

T cells (C) Signup and view all the answers

What is the primary function of granzymes in the innate immune response?

To trigger apoptosis in infected cells (C) Signup and view all the answers

Which of the following is NOT a function of the complement system?

Producing antibodies against pathogens (D) Signup and view all the answers

What is the primary role of histamine in the inflammatory response?

To cause vasodilation and increase capillary permeability (D) Signup and view all the answers

Which of the following is NOT a characteristic of the adaptive immune response?

Rapid response to pathogens (B) Signup and view all the answers

What is the primary function of major histocompatibility complex (MHC) molecules?

To present antigens to T cells (C) Signup and view all the answers

Which type of antigen is typically presented by class II MHC molecules?

Extracellular antigens (C) Signup and view all the answers

What is the primary function of pattern recognition receptors in the innate immune response?

To recognize and bind to pathogens or molecules released by damaged cells (C) Signup and view all the answers

Which type of immune response is responsible for autoimmune diseases?

Adaptive immune response (A) Signup and view all the answers

What is the role of macrophages in the immune response?

Stimulate phagocytosis at the site of infection (C) Signup and view all the answers

What is the primary function of dendritic cells in the immune response?

Bring antigens to regional lymph nodes (D) Signup and view all the answers

Which of the following statements about T cell tolerance is correct?

It involves eliminating T cells that might attack the body's own cells (A) Signup and view all the answers

What is the primary function of helper T cells (Th1 and Th2)?

Secrete cytokines to enhance other immune responses (C) Signup and view all the answers

What is the primary function of cytotoxic T cells in the immune response?

Kill target cells by inducing apoptosis (C) Signup and view all the answers

Which of the following statements about B cells is correct?

B cells can recognize unprocessed antigens without MHC presentation (A) Signup and view all the answers

What is the primary function of IgM antibodies in the immune response?

Activate the complement system and facilitate binding (B) Signup and view all the answers

Which of the following antibody classes is primarily involved in allergic reactions?

IgE (A) Signup and view all the answers

What is the difference between active and passive immunity?

Active immunity leads to immunological memory, while passive immunity does not (B) Signup and view all the answers

Which of the following statements about mucosal immune responses is correct?

Mucosal immune responses neutralize pathogens by coating them with IgA and IgM antibodies (D) Signup and view all the answers