Question 1

Which of the following is NOT a primary function of the lymphatic system?

Accepted Answer

Production of red blood cells in adults

Question 2

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

Accepted Answer

Blockage or removal of lymphatic vessels preventing normal lymph return to blood

Question 3

Which lymphatic structure is responsible for absorbing dietary fats and delivering chyle to the bloodstream?

Accepted Answer

Lacteals

Question 4

Which of the following best describes the flow of lymph from tissues back to the circulatory system?

Accepted Answer

ECF $$\rightarrow$$ capillaries $$\rightarrow$$ vessels $$\rightarrow$$ nodes $$\rightarrow$$ trunks $$\rightarrow$$ ducts $$\rightarrow$$ circulatory system

Question 5

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

Accepted Answer

Right lymphatic duct

Question 6

Which of the following cells is responsible for producing antibodies in response to antigens?

Accepted Answer

Plasma cells (derived from B lymphocytes)

Question 7

A lymph node is swollen but not painful. What is the most likely cause?

Accepted Answer

Metastasizing cancer cells trapped in the node

Question 8

Which of the following is TRUE regarding the thymus?

Accepted Answer

It functions strictly in T lymphocyte maturation

Question 9

Which lymphoid organ is the site of lymphocyte proliferation, immune surveillance, and also removes aged blood cells and platelets?

Accepted Answer

Spleen

Question 10

Which of the following best describes the function of tonsillar crypts?

Accepted Answer

They trap bacteria and particulate matter, allowing immune cells to become activated and build memory

Question 11

Which of the following mechanisms does NOT contribute to lymph transport through lymphatic vessels?

Accepted Answer

High-pressure arterial flow

Question 12

Which lymphoid tissue is found in the mucosa of the respiratory tract, genitourinary organs, and digestive tract, and includes tonsils, Peyer's patches, and the appendix?

Accepted Answer

MALT (mucosa-associated lymphoid tissue)

Question 13

Which of the following statements about lymphatic capillaries is FALSE?

Accepted Answer

They are present in bones, teeth, and bone marrow

Question 14

Which equation best represents the volume of interstitial fluid circulated by the lymphatic system per day?

Accepted Answer

$$\sim 3\ \mathrm{L}$$

Question 15

Which of the following is a supporting lymphoid cell that produces reticular fibers forming the stroma in lymphoid organs?

Accepted Answer

Reticular cells

Question 16

Which lymphoid organ is most active and largest during childhood, then gradually atrophies with age?

Accepted Answer

Thymus

Question 17

Which of the following is TRUE about the blood-thymus barrier?

Accepted Answer

It prevents premature activation of T lymphocytes by keeping them isolated from antigens

Question 18

Which lymphoid organ contains white pulp (site of immune function) and red pulp (site of removal of old blood cells and pathogens)?

Accepted Answer

Spleen

Question 19

Which of the following is a function of Peyer's patches and the appendix?

Accepted Answer

Destroy bacteria, preventing them from breaching the intestinal wall

Question 20

Which of the following best describes the role of regulatory T cells developed in the thymic corpuscles?

Accepted Answer

They help prevent autoimmune reactions

Chapter 20: The Lymphatic System and Lymphoid Organs and Tissues – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards