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18 Questions

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Immune Response and Complement System

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Questions and Answers

Which type of immune response involves the activation of B-cells?

Adaptive immunity

Innate immunity

Humoral immunity (correct)

Cell-mediated immunity

What is the function of Major Histocompatibility Complex (MHC) in antigen presentation?

To present antigens to lymphocytes (correct)

To recognize self-antigens

To produce antibodies

To activate B-cells

Which type of T-cell is responsible for directly killing infected cells?

Cytotoxic T-cells (correct)

Helper T-cells

Regulatory T-cells

NK cells

What is the primary function of antigen-presenting cells (APCs)?

To present antigens to lymphocytes Signup and view all the answers

Which of the following is a characteristic of adaptive immunity?

Antigen-specific Signup and view all the answers

What is the function of CD3 markers on T-lymphocytes?

To determine the specific function of T-lymphocytes Signup and view all the answers

What is the primary location of T-lymphocytes in the lymphoid tissue?

Diffuse lymphoid tissue Signup and view all the answers

What is the main difference between primary and secondary nodules in lymphoid tissue?

Activity level of lymphocytes Signup and view all the answers

Which of the following is NOT a type of lymphoid organ?

Liver Signup and view all the answers

What is the function of the stroma in lymphoid organs?

To provide structural support Signup and view all the answers

What type of lymphoid tissue is primarily composed of B-lymphocytes?

Nodular lymphoid tissue Signup and view all the answers

What is the main function of the spleen in the lymphoid system?

To filter the blood Signup and view all the answers

What is the primary function of Helper T-cells (Th cells)?

To produce cytokines that activate B-cell differentiation Signup and view all the answers

What is the role of Cytotoxic T-cells (Tc cells)?

To induce apoptosis of target cells Signup and view all the answers

What is the primary function of Regulatory T-cells (Ts cells)?

To suppress immune response when needed Signup and view all the answers

What is the outcome of B-cell activation?

Differentiation to plasma cells and formation of memory B-cells Signup and view all the answers

What is the primary difference between primary and secondary immune responses?

Primary response involves the activation of naive T-cells, while secondary response involves the activation of memory T-cells Signup and view all the answers

What is the function of B-cell receptors (BCR)?

To recognize epitopes of antigens Signup and view all the answers