Question 1

Which of the following best describes the primary function of lymphatic vessels in the human body?

Accepted Answer

They collect excess interstitial fluid and return it to the bloodstream.

Question 2

A patient presents with swelling in the lower limbs due to blockage of lymphatic vessels by parasitic worms. What is the most likely diagnosis?

Accepted Answer

Elephantiasis

Question 3

Which structural feature of lymphatic capillaries allows them to absorb proteins and larger particles from the interstitial space?

Accepted Answer

Presence of minivalve flaps that open when interstitial pressure is high

Question 4

Which lymphatic structure is responsible for transporting absorbed fats from the small intestine to the blood?

Accepted Answer

Lacteals

Question 5

A cancer cell enters the lymphatic system and is first detected in a lymph node that receives drainage from the affected area. What is this node called?

Accepted Answer

Sentinel node

Question 6

Which of the following is TRUE regarding the flow of lymph through a lymph node?

Accepted Answer

Lymph enters through afferent vessels and exits through efferent vessels.

Question 7

Which equation best represents the relationship between fluid pressure and the opening of minivalve flaps in lymphatic capillaries?

Accepted Answer

$$P_{interstitial} \u003e P_{capillary}$$

Question 8

Which lymphatic duct receives lymph from the majority of the body, except the right upper limb and right side of the head and thorax?

Accepted Answer

Thoracic duct

Question 9

A patient has a ruptured spleen following a car accident. Which of the following is a possible consequence?

Accepted Answer

Impaired recycling of iron from hemoglobin

Question 10

Which of the following statements about lymph nodes is CORRECT?

Accepted Answer

They contain germinal centers where B cells proliferate.

Question 11

Which organ is the primary site for T cell maturation?

Accepted Answer

Thymus

Question 12

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

Accepted Answer

Production of plasma proteins

Question 13

Which of the following lymphoid tissues is strategically located to guard the body's entryways against pathogens?

Accepted Answer

Mucosa-associated lymphoid tissue (MALT)

Question 14

A patient with Hodgkin's lymphoma is most likely to have which of the following findings?

Accepted Answer

Malignantly transformed B cells called Reed-Sternberg cells

Question 15

Which of the following best explains why lymphatic capillaries are absent from bone, bone marrow, and the central nervous system?

Accepted Answer

Lymphatic capillaries cannot penetrate the dense structure of these tissues.

Question 16

Which of the following is a consequence of having fewer efferent than afferent vessels in a lymph node?

Accepted Answer

Lymph flow slows down, allowing more time for immune cells to act.

Question 17

Which of the following equations best represents the one-way flow of lymph from capillaries to ducts?

Accepted Answer

$$	ext{Lymphatic\ capillaries} ightarrow 	ext{Collecting\ vessels} ightarrow 	ext{Trunks} ightarrow 	ext{Ducts}$$

Question 18

Which of the following is a real-life example of lymphatic system dysfunction leading to disease?

Accepted Answer

Alzheimer's disease due to malfunction of the glymphatic system

Question 19

Which of the following best describes the role of dendritic cells in lymph nodes?

Accepted Answer

They present antigens to T cells, activating the immune response.

Question 20

Which of the following is a correct statement about the development of the lymphatic system?

Accepted Answer

Lymphatic vessels develop from budding veins during embryonic development.

Lymphatic System: Structure, Function, and Components

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