Question 1

Which of the following best describes the primary function of the lymphatic system?

Accepted Answer

To return interstitial fluid to the bloodstream and participate in immune defense

Question 2

Which structure is responsible for the maturation of T lymphocytes?

Accepted Answer

Thymus gland

Question 3

A patient presents with swelling in their lower limbs due to the accumulation of interstitial fluid. Which condition is most likely responsible?

Accepted Answer

Lymphedema

Question 4

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

Accepted Answer

Maturation of T cells

Question 5

Which of the following best explains why lymphatic capillaries are highly permeable?

Accepted Answer

They are lined with overlapping endothelial cells that allow fluid entry

Question 6

Which immune cell type is primarily responsible for antibody production?

Accepted Answer

Plasma cells

Question 7

A child is born with a genetic defect that prevents the development of both T and B cells. Which condition does this describe?

Accepted Answer

Severe combined immunodeficiency (SCID)

Question 8

Which of the following best describes the difference between active and passive immunity?

Accepted Answer

Active immunity results from the production of memory cells after exposure to an antigen, while passive immunity results from the transfer of antibodies.

Question 9

Which of the following is a function of lymph nodes?

Accepted Answer

Filtering lymph and trapping pathogens

Question 10

Which of the following best describes the role of the skin in the immune system?

Accepted Answer

It acts as a physical barrier and secretes substances that inhibit pathogen growth.

Question 11

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

Accepted Answer

Injection of immunoglobulins after exposure to a pathogen

Question 12

Which of the following best describes the process of clonal selection in adaptive immunity?

Accepted Answer

Activation and proliferation of lymphocytes specific to an encountered antigen

Question 13

A patient receives a kidney transplant and is prescribed immunosuppressive drugs. What is the primary purpose of these drugs?

Accepted Answer

To reduce the risk of organ rejection by suppressing the immune response

Question 14

Which of the following is a characteristic of a secondary adaptive immune response compared to a primary response?

Accepted Answer

It is faster and stronger due to immunological memory

Question 15

Which of the following best describes the role of cytokines in the immune response?

Accepted Answer

They are signaling molecules that coordinate immune cell activity.

Question 16

Which of the following is a correct sequence of events in the inflammatory response?

Accepted Answer

Release of histamine → vasodilation → increased capillary permeability

Question 17

Which of the following best explains why the thymus shrinks with age?

Accepted Answer

It is gradually replaced by adipose (fat) tissue

Question 18

Which of the following is a distinguishing feature of the mucosa-associated lymphoid tissue (MALT)?

Accepted Answer

It is found in the mucosal linings of the digestive, respiratory, and urinary tracts

Question 19

Which of the following is an example of a type I hypersensitivity reaction?

Accepted Answer

Allergic reaction to pollen causing hay fever

Question 20

Which of the following best describes the function of dendritic cells in the immune system?

Accepted Answer

They present antigens to T cells to initiate adaptive immune responses.

Lymphatic and Immune Systems: Structure, Function, and Clinical Relevance

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