Question 1

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

Accepted Answer

Transport of digested fats as chyle into the lymphatic system

Question 2

A patient presents with severe localized edema after cancer surgery. Which mechanism best explains this clinical finding?

Accepted Answer

Insufficient return of lymph due to removal of lymphatic vessels

Question 3

Which equation best represents the net filtration pressure ($$NFP) at a $$blood capillary, influencing lymph formation?

Accepted Answer

$$NFP = (HP_c - HP_i) - (OP_c - OP_i)$$

Question 4

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

Accepted Answer

Production of plasma cells

Question 5

Which lymphatic duct drains lymph from the right upper limb and right side of the head and thorax?

Accepted Answer

Right lymphatic duct

Question 6

Which cell type is primarily responsible for producing antibodies in response to antigens?

Accepted Answer

Plasma cells

Question 7

A patient with cancer has swollen but painless lymph nodes. What is the most likely explanation?

Accepted Answer

Lymph nodes are infiltrated by metastasizing cancer cells

Question 8

Which of the following mechanisms does NOT contribute to lymph flow in lymphatic vessels?

Accepted Answer

High-pressure arterial blood flow

Question 9

Which structure is the site of T lymphocyte maturation?

Accepted Answer

Thymus

Question 10

Which of the following best describes the role of dendritic cells in lymphoid tissues?

Accepted Answer

Capture and deliver antigens to lymph nodes to activate T cells

Question 11

Which of the following is a major function of mucosa-associated lymphoid tissue (MALT)?

Accepted Answer

Protection against pathogens entering through mucous membranes

Question 12

Which of the following lymphoid organs is most active during childhood and gradually atrophies after puberty?

Accepted Answer

Thymus

Question 13

Which of the following is TRUE regarding lymphatic capillaries?

Accepted Answer

They are absent from bones and teeth

Question 14

Which of the following best describes the structural difference between lymphatic collecting vessels and veins?

Accepted Answer

Lymphatic vessels have thinner walls, more valves, and more anastomoses

Question 15

Which of the following is a function of Peyer's patches in the small intestine?

Accepted Answer

Prevention of bacterial breach of the intestinal wall and generation of memory lymphocytes

Question 16

Which of the following is a characteristic of lymphoid follicles?

Accepted Answer

Solid, spherical bodies with tightly packed lymphoid cells and reticular fibers

Question 17

Which of the following is TRUE about the cisterna chyli?

Accepted Answer

It is an enlarged sac that serves as the origin of the thoracic duct in about half of individuals

Question 18

Which of the following best describes the function of reticular cells in lymphoid tissues?

Accepted Answer

Form the reticular fiber stroma that supports other cell types

Question 19

Which of the following is a distinguishing feature of cancerous lymph nodes compared to infected lymph nodes?

Accepted Answer

Cancerous lymph nodes are swollen but usually not painful

Question 20

Which of the following is TRUE regarding the regeneration of the spleen in children?

Accepted Answer

The spleen will regenerate if a small part remains in children younger than 12

Chapter 20: The Lymphatic System and Lymphoid Organs and Tissues

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