Question 1

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

Accepted Answer

Return leaked fluid from capillaries back to the general circulation

Question 2

A patient presents with swelling in the axillary region after a mastectomy. Which lymphatic structure is most likely affected, and what is its primary function?

Accepted Answer

Axillary lymph nodes; filtration of leaked fluid and activation of immune cells

Question 3

Which lymphoid organ is responsible for the maturation of T lymphocytes and atrophies with age?

Accepted Answer

Thymus

Question 4

What is the correct sequence of fluid movement in the lymphatic system?

Accepted Answer

Blood → Interstitial fluid → Lymph

Question 5

Which of the following is TRUE regarding the structure of a lymph node?

Accepted Answer

It contains a cortex with B and T lymphocytes and follicles with germinal centers.

Question 6

A histological slide shows follicles with germinal centers only on one side of the tissue. Which lymphatic structure is this most likely to be?

Accepted Answer

Peyer's patches

Question 7

Which lymphoid organ contains both white pulp and red pulp, and what is the function of its red pulp?

Accepted Answer

Spleen; filtration of blood and removal of old erythrocytes

Question 8

Which of the following lymphoid organs is NOT enclosed by a capsule?

Accepted Answer

Tonsil

Question 9

A researcher is studying the flow of lymph. Which duct drains lymph from the right upper quadrant of the body into the right subclavian vein?

Accepted Answer

Right lymphatic duct

Question 10

Which of the following features would you expect to find in the medulla of a lymph node?

Accepted Answer

Cords of macrophages and lymphocytes, and sinuses where lymph circulates

Question 11

Which equation best represents the relationship between hydrostatic pressure ($$P_{h}$$), osmotic pressure ($$P_{o}$$), and net filtration pressure ($$NFP) in $$capillary exchange, relevant to lymph formation?

Accepted Answer

$$NFP = P_{h} - P_{o}$$

Question 12

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

Accepted Answer

Maturation of T lymphocytes and absence of B cells or follicles

Question 13

Which lymphoid tissue is found in mucous membranes and is part of MALT (mucosa-associated lymphoid tissue)?

Accepted Answer

Lymphoid nodules

Question 14

A patient has an infection in the inguinal region. Which lymph nodes are most likely to become enlarged?

Accepted Answer

Inguinal lymph nodes

Question 15

Which of the following statements about tonsils is correct?

Accepted Answer

They contain crypts that trap bacteria.

Question 16

Which lymphoid organ contains follicles with germinal centers all around its structure?

Accepted Answer

Appendix

Question 17

Which connective tissue type forms the structural framework of lymphoid organs and supports immune cells?

Accepted Answer

Reticular connective tissue

Question 18

Which of the following is a secondary lymphoid organ where mature lymphocytes are exposed to antigens?

Accepted Answer

Lymph node

Question 19

A biopsy of a lymphatic organ reveals the presence of central arteries surrounded by lymphocytes, splenic sinuses, and cords of macrophages. Which organ is this?

Accepted Answer

Spleen

Question 20

Which of the following is NOT a question to ask when identifying lymphatic tissues under the microscope?

Accepted Answer

Is there a blood supply?

Lymphatic System: Structure, Function, and Major Organs

Study Guide - Practice Questions

Study Guide - Flashcards