Features of Innate and Adaptive Immunity

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What is the primary function of the innate immune system?

To coordinate the adaptive immune response against specific antigens

To recognize and respond to a wide variety of molecular patterns associated with microbes and damaged host cells (correct)

To produce antibodies that neutralize foreign substances

To provide long-lasting, specific immunity against pathogens

Which of the following is a key feature that distinguishes innate and adaptive immunity?

Innate immunity provides long-lasting memory responses, while adaptive immunity does not

Innate immunity has limited diversity, while adaptive immunity has a very large diversity of antigen receptors (correct)

Innate immunity is specific for self-molecules, while adaptive immunity is not

Innate immunity involves only cellular components, while adaptive immunity involves both cellular and humoral components

Which of the following is a primary lymphoid organ?

Spleen

Mucosal-associated lymphoid tissue

Thymus (correct)

Lymph nodes

Which of the following is a key function of the skin and mucosal epithelia as part of the innate immune system?

To provide a physical and chemical barrier against microorganisms (D) Signup and view all the answers

What is the primary role of lymphocytes in the adaptive immune system?

To generate highly specific antigen receptors and mediate targeted immune responses (D) Signup and view all the answers

Which of the following is a secondary lymphoid organ?

Lymph nodes (B) Signup and view all the answers

Where do immature lymphocytes develop?

Thymus (C) Signup and view all the answers

Which tissue is NOT considered a secondary (peripheral) lymphoid tissue?

Thymus (D) Signup and view all the answers

What is the site of generation of circulating blood cells?

Bone marrow (D) Signup and view all the answers

Which of the following is a mucosal-associated lymphoid tissue?

Peyer's Patches (D) Signup and view all the answers

Which organ is associated with skin-associated lymphoid tissue?

Spleen (A) Signup and view all the answers

Where are lymphocytes derived from a common bone marrow lymphoid progenitor cell?

Bone marrow (C) Signup and view all the answers

Which of the following is a primary lymphoid organ where immature lymphocytes develop?

Thymus (B) Signup and view all the answers

Which of the following is a secondary lymphoid organ where antigen is localized to be exposed to mature lymphocytes?

Lymph nodes (D) Signup and view all the answers

What is the function of the lymphatic system?

To drain fluid from tissues and maintain fluid homeostasis (C) Signup and view all the answers

What is the structure of a secondary lymphoid follicle?

A ring of B cells surrounding a germinal center with proliferating B and T cells (C) Signup and view all the answers

Which of the following is an example of a mucosal-associated lymphoid tissue (MALT)?

Peyer's patches (C) Signup and view all the answers

What is the function of lymphatic capillaries?

To permit free uptake of interstitial fluid (B) Signup and view all the answers