Question 1

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

Accepted Answer

To return interstitial fluid and leaked plasma proteins back to the blood

Question 2

Lymphatic capillaries are more permeable than blood capillaries due to which two specialized structures?

Accepted Answer

Minivalves and lacteals

Question 3

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

Accepted Answer

Right lymphatic duct

Question 4

A patient presents with severe localized edema after lymphatic vessel removal. What is the most likely diagnosis?

Accepted Answer

Lymphedema

Question 5

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

Accepted Answer

Produces insulin for blood glucose regulation

Question 6

Which lymphoid organ is the site where T cells mature?

Accepted Answer

Thymus

Question 7

What is the main function of Mucosa-Associated Lymphoid Tissue (MALT)?

Accepted Answer

To protect mucosal surfaces from pathogens

Question 8

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

Accepted Answer

Lymph enters via afferent vessels and exits via efferent vessels

Question 9

Which cells are responsible for producing antibodies in the lymphatic system?

Accepted Answer

Plasma cells derived from B cells

Question 10

A patient with inflamed, swollen, and tender lymph nodes filled with pus is most likely suffering from:

Accepted Answer

Buboes

Question 11

Which of the following equations best represents the relationship between hydrostatic pressure ($$P_{hyd}$$), osmotic pressure ($$P_{osm}$$), and net filtration pressure ($$NFP) in $$capillary exchange?

Accepted Answer

$$NFP = P_{hyd} - P_{osm}$$

Question 12

Which lymphoid tissue is characterized by solid, spherical bodies consisting of tightly packed lymphoid cells and reticular fibers, often containing germinal centers?

Accepted Answer

Lymphoid follicles (nodules)

Question 13

Which of the following is a specialized lymph capillary present in the intestinal mucosa that absorbs digested fats?

Accepted Answer

Lacteal

Question 14

Which of the following is TRUE regarding lymphangitis?

Accepted Answer

It is characterized by painful red lines under the skin due to inflammation of larger lymphatic vessels

Question 15

Which of the following is a primary lymphoid organ?

Accepted Answer

Thymus

Question 16

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, helping activate T cells

Question 17

If a patient has a ruptured spleen and undergoes splenectomy, which organ(s) can take over most of the spleen's functions?

Accepted Answer

Liver and bone marrow

Question 18

Which of the following is NOT a major region drained by lymphatic trunks?

Accepted Answer

Coronary

Question 19

Which of the following best explains why lymph flows only toward the heart?

Accepted Answer

Lymphatic vessels have valves that prevent backflow

Question 20

A patient with a tumor blocking lymphatic drainage in the lower limb is most likely to develop which condition?

Accepted Answer

Lymphedema

Chapter 20: The Lymphatic System and Lymphoid Organs and Tissues

Study Guide - Practice Questions

Study Guide - Flashcards