Question 1

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

Accepted Answer

To return leaked fluids and proteins from tissues back to the blood and provide the structural basis for the immune system

Question 2

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

Accepted Answer

Contraction of cardiac muscle in lymphatic vessel walls

Question 3

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

Accepted Answer

Insufficient return of lymph to the blood due to removal of lymphatic vessels

Question 4

Which of the following is TRUE regarding lymphatic capillaries?

Accepted Answer

They are absent from bones and teeth

Question 5

Which lymphatic structure is specialized for the absorption and transport of digested fats?

Accepted Answer

Lacteals in the small intestine

Question 6

Which of the following is the correct sequence for the flow of lymph through a lymph node?

Accepted Answer

Afferent vessel → subcapsular sinus → cortical sinuses → medullary sinuses → efferent vessel

Question 7

Which of the following statements about the spleen is CORRECT?

Accepted Answer

The spleen stores iron and recycles breakdown products of red blood cells

Question 8

Which of the following best describes the function of the thymus?

Accepted Answer

It provides an environment for T lymphocyte maturation and prevents premature activation by the blood-thymus barrier

Question 9

Which of the following lymphoid organs or tissues is most likely to become inflamed and tender during an acute throat infection?

Accepted Answer

Palatine tonsils

Question 10

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

Accepted Answer

The lymph nodes are secondary cancer sites infiltrated by metastasizing cells

Question 11

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

Accepted Answer

To protect mucosal surfaces from pathogens entering the body

Question 12

Which of the following best explains why lymph flow is slow through a lymph node?

Accepted Answer

There are fewer efferent vessels than afferent vessels

Question 13

Which of the following cell types is responsible for producing the reticular fiber stroma in lymphoid organs?

Accepted Answer

Reticular cells

Question 14

Which of the following is a key difference between primary and secondary lymphoid organs?

Accepted Answer

Primary lymphoid organs are where lymphocytes mature; secondary lymphoid organs are where lymphocytes encounter antigens

Question 15

Which of the following best describes the role of dendritic cells in the lymphatic system?

Accepted Answer

They capture antigens and deliver them to lymph nodes to activate T cells

Question 16

A patient has a blockage in the right lymphatic duct. Which region of the body would most likely experience impaired lymph drainage?

Accepted Answer

Right upper limb

Question 17

Which of the following equations best represents the net filtration pressure (NFP) that drives fluid movement at the capillary beds, contributing to lymph formation?

Accepted Answer

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

Question 18

Which of the following is a unique feature of the thymus compared to other lymphoid organs?

Accepted Answer

Its stroma consists of epithelial cells rather than reticular fibers

Question 19

Which of the following best describes the function of Peyer’s patches in the small intestine?

Accepted Answer

They prevent bacteria from breaching the intestinal wall and generate memory lymphocytes

Question 20

Which of the following statements about lymphoid follicles is CORRECT?

Accepted Answer

They contain tightly packed lymphoid cells and often have germinal centers of proliferating B cells

Study Guide: The Lymphatic System and Lymphoid Organs & Tissues

Study Guide - Practice Questions

Study Guide - Flashcards