Question 1

Which of the following best describes the primary function of the lymphatic system in relation to the cardiovascular system?

Accepted Answer

It returns excess interstitial fluid to the bloodstream, maintaining blood volume.

Question 2

A patient presents with severe swelling in their lower limbs. Which malfunction in the lymphatic system is most likely responsible for this condition?

Accepted Answer

Failure of lymphatic capillaries to absorb interstitial fluid.

Question 3

Which of the following correctly lists the route of lymph flow from tissues back to the heart?

Accepted Answer

Lymphatic capillaries → larger lymphatic vessels → lymph node → lymph trunk → lymph duct → heart

Question 4

Which of the following is NOT a component of the lymphatic system?

Accepted Answer

Arteries

Question 5

What are the two basic functions of lymph nodes?

Accepted Answer

Filtration of lymph and activation of the immune response

Question 6

Which structure in the lymph node is responsible for housing lymphocytes and is located in the outer region?

Accepted Answer

Cortex

Question 7

A biopsy of a lymph node reveals dense clusters of lymphocytes and reticular fibers. Which part of the lymph node is most likely being examined?

Accepted Answer

Cortex

Question 8

Which of the following best describes the function of the medullary cords in a lymph node?

Accepted Answer

They provide structural support and contain macrophages and plasma cells.

Question 9

Which of the following is a primary lymphoid organ?

Accepted Answer

Thymus

Question 10

Which of the following is a secondary lymphoid organ?

Accepted Answer

Lymph node

Question 11

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

Accepted Answer

It filters blood, recycles old red blood cells, and stores platelets.

Question 12

Which of the following structures is NOT part of MALT (Mucosa-Associated Lymphoid Tissue)?

Accepted Answer

Spleen

Question 13

A patient has a compromised immune response due to a defect in lymphoid tissue. Which of the following is most likely affected?

Accepted Answer

Production of lymphocytes

Question 14

Which of the following best describes the role of lymph sinuses in a lymph node?

Accepted Answer

They are spaces that allow lymph to flow and be filtered by macrophages.

Question 15

If the lymphatic system failed to return excess interstitial fluid to the bloodstream, which equation would best represent the resulting imbalance in fluid volume?

Accepted Answer

$$\Delta V = V_{interstitial} + V_{lymph} - V_{blood}$$

Question 16

Which of the following scenarios best illustrates the importance of lymph nodes in immune defense?

Accepted Answer

A person develops swelling after a minor cut, and the lymph nodes near the injury become tender as they filter pathogens and activate immune cells.

Question 17

Which of the following best defines the capsule of a lymph node?

Accepted Answer

A dense connective tissue layer that surrounds and protects the lymph node.

Question 18

Which equation best represents the rate of lymph flow ($$Q) $$through a lymphatic vessel, given pressure difference ($$\Delta P) $$and resistance ($$R$$)?

Accepted Answer

$$Q = \frac{\Delta P}{R}$$

Question 19

Which of the following best describes the function of MALT in the body?

Accepted Answer

It provides immune protection to mucosal surfaces such as the gastrointestinal and respiratory tracts.

Question 20

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

Accepted Answer

Impaired filtration of blood and increased susceptibility to infections.

A&P II Study Guide: Lymphatic System & Lymphoid Organs

Study Guide - Practice Questions

Study Guide - Flashcards