Question 1

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

Accepted Answer

They absorb and return excess interstitial fluid, including proteins, to the bloodstream.

Question 2

A patient presents with severe localized edema in the right arm after lymph node removal during cancer surgery. Which condition is most likely responsible for this symptom?

Accepted Answer

Lymphedema

Question 3

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

Accepted Answer

Contraction of cardiac muscle

Question 4

Which lymphatic structure is responsible for absorbing dietary fats from the small intestine?

Accepted Answer

Lacteals

Question 5

A cancer cell escapes destruction in a lymph node and travels to another part of the body. Which property of lymphatic capillaries allows this to occur?

Accepted Answer

Their permeability allows uptake of large particles, including cancer cells.

Question 6

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

Accepted Answer

Its stroma consists of epithelial cells, not reticular fibers.

Question 7

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

Accepted Answer

There are fewer efferent than afferent lymphatic vessels.

Question 8

A patient with a ruptured spleen is at increased risk for which of the following complications?

Accepted Answer

Life-threatening hemorrhage and shock

Question 9

Which of the following is TRUE regarding the right lymphatic duct?

Accepted Answer

It drains lymph from the right upper limb and right side of the head and thorax.

Question 10

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 11

Which cell type is responsible for producing the reticular fiber stroma that supports lymphoid organs?

Accepted Answer

Reticular cells

Question 12

Which of the following is a function of the spleen’s red pulp?

Accepted Answer

Destruction of old red blood cells and bloodborne pathogens

Question 13

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

Accepted Answer

They capture antigens and present them to T cells for activation.

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 they encounter antigens.

Question 15

A patient’s lymph node is swollen, tender, and pus-filled after a bacterial infection. What is the most accurate term for this condition?

Accepted Answer

Buboes

Question 16

Which of the following best explains why the thymus does not directly fight antigens?

Accepted Answer

Its blood-thymus barrier isolates developing T cells from antigens.

Question 17

Which of the following is a function of the tonsillar crypts found in the tonsils?

Accepted Answer

They trap bacteria and debris, exposing them to immune cells.

Question 18

Which of the following best describes the pathway of lymph through a lymph node?

Accepted Answer

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

Question 19

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

Accepted Answer

$$	ext{NFP} = (P_c + \pi_{IF}) - (P_{IF} + \pi_c)$$

Question 20

Which of the following is TRUE regarding the development of lymphatic vessels during embryogenesis?

Accepted Answer

They arise as lymph sacs from developing veins.

The Lymphatic System and Lymphoid Organs: Structure, Function, and Clinical Aspects

Study Guide - Practice Questions

Study Guide - Flashcards