Question 1

Which of the following best describes the primary function of lymphatic capillaries in the small intestine?

Accepted Answer

They absorb dietary fats and transport them to the bloodstream.

Question 2

A patient presents with severe swelling of the lower limb after a parasitic infection. Which condition is most likely responsible for this presentation?

Accepted Answer

Elephantiasis

Question 3

Which lymphatic structure is responsible for draining lymph from the right upper extremity and right side of the head, neck, and upper torso?

Accepted Answer

Right lymphatic duct

Question 4

What is the main difference between afferent and efferent lymphatic vessels in a lymph node?

Accepted Answer

Afferent vessels bring lymph to the node, efferent vessels carry lymph away from the node.

Question 5

Which of the following is NOT a function of the spleen?

Accepted Answer

Production of T lymphocytes

Question 6

A patient develops swelling and tenderness in the axillary lymph nodes after an infected finger. What is the most likely diagnosis?

Accepted Answer

Lymphadenitis

Question 7

Which of the following best describes the role of complement proteins in immunity?

Accepted Answer

They form a cascade that creates holes in foreign cell membranes, leading to cell lysis.

Question 8

Which immune cell type is primarily responsible for presenting antigens to T cells and initiating adaptive immune responses?

Accepted Answer

Dendritic cells

Question 9

Which of the following is a key difference between innate and adaptive immunity?

Accepted Answer

Adaptive immunity is specific and has memory, while innate immunity is nonspecific and lacks memory.

Question 10

A newborn is diagnosed with severe combined immune deficiency (SCID). Which of the following best explains the underlying cause?

Accepted Answer

Improper lymphocyte development before birth

Question 11

Which of the following scenarios is an example of artificial passive immunity?

Accepted Answer

Receiving antibodies produced in another individual’s immune system

Question 12

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

Accepted Answer

Cytotoxic T cell

Question 13

A patient receives a kidney transplant and develops an immune response against the new organ. This is an example of:

Accepted Answer

Alloimmunity (isoimmunity)

Question 14

Which of the following best describes the process of phagocytosis?

Accepted Answer

The ingestion and destruction of foreign cells or substances by immune cells

Question 15

Which of the following is a sign of inflammation?

Accepted Answer

Heat

Question 16

Which of the following best explains why moderate exercise is recommended after surgery to support immunity?

Accepted Answer

It increases the number and activity of white blood cells, enhancing immune function.

Question 17

Which of the following is a function of antibodies in the immune response?

Accepted Answer

They neutralize toxins, agglutinate enemy cells, and promote phagocytosis.

Question 18

Which of the following best describes the role of the thymus in immunity?

Accepted Answer

It produces T lymphocytes and secretes thymosins for T-cell development.

Question 19

Which of the following is a characteristic of Hodgkin disease?

Accepted Answer

Enlarged, painless lymph nodes followed by anemia and fever

Question 20

Which of the following best describes the process and outcome of the complement cascade?

Accepted Answer

It forms protein rings that create holes in foreign cell membranes, leading to cell lysis.

Lymphatic System and Immunity: Structure, Function, and Clinical Relevance

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