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The spleen, thymus gland, tonsils, and lymph nodes are:

A.

Concerned only with destroying RBCs

B.

Confined to the thoracic cavity

C.

Lymphoid organs

D.

Concerned only with phagocytosis

Answer and Explanation

The Correct Answer is C

A. Concerned only with destroying RBCs

  Only the spleen is partly involved in RBC destruction-this doesn’t apply to all listed organs.

B. Confined to the thoracic cavity

  These organs are located in different parts of the body-e.g., spleen in the abdomen, lymph nodes throughout the body.

C. Lymphoid organs

    These are all components of the lymphatic/immune system, involved in immune surveillance and lymphocyte production.

D. Concerned only with phagocytosis

  While some have phagocytic activity (e.g., macrophages in lymph nodes), their functions go far beyond phagocytosis (e.g., immune cell activation).


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Related Questions

Correct Answer is C

Explanation

A. Naturally acquired active immunity

This results from infection and the body’s own immune response—not applicable to newborns.

B. Artificially acquired passive immunity

This comes from injection of antibodies (e.g., immunoglobulins)—not from the mother.

C. Naturally acquired passive immunity

This is passed from mother to child through the placenta (IgG antibodies) and via breast milk (IgA).

D. Artificially acquired active immunity

This comes from vaccines that stimulate the body to produce its own antibodies.

Correct Answer is A

Explanation

A. Nick had immunity against the disease

The scenario implies that Nick had resistance (immunity), preventing illness despite exposure.

B. Rick got a communicable disease

This is true but doesn’t explain why Nick didn’t get sick.

C. Rick had a weak immune system

This is speculative; the key point is that Nick had immunity, not that Rick was unusually weak.

D. Rick got a contagious disease

Contagious diseases can spread, but this still doesn't explain Nick’s protection.

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