Question 1

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

Accepted Answer

Transporting oxygen directly to tissues

Question 2

Lymphatic capillaries are more permeable than blood capillaries. Which feature is responsible for this increased permeability?

Accepted Answer

Overlapping endothelial cells forming one-way minivalves

Question 3

Which lymphoid organ is the site of T cell maturation and does NOT contain B cells?

Accepted Answer

Thymus

Question 4

A patient develops localized swelling in the leg after cancer surgery. What is the most likely cause?

Accepted Answer

Blocked lymphatic vessels preventing normal lymph return

Question 5

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

Accepted Answer

Lymph enters the convex side, passes through cortex and medulla, and exits the concave side at the hilum

Question 6

Which of the following lymphoid tissues is NOT fully encapsulated and contains crypts that trap bacteria?

Accepted Answer

Tonsils

Question 7

Which equation best represents the relationship between fluid movement and pressure in lymphatic vessels?

Accepted Answer

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

Question 8

Which of the following is a major function of the spleen?

Accepted Answer

Removal of aged blood cells and platelets

Question 9

Which lymphoid tissue is found in the mucosa of the digestive tract and is important for immune surveillance?

Accepted Answer

Peyer's patches

Question 10

Which cell type is primarily responsible for phagocytizing foreign substances and activating T cells in lymphoid tissues?

Accepted Answer

Macrophages

Question 11

Which of the following statements about the thymus is TRUE?

Accepted Answer

It contains a blood-thymus barrier to prevent premature activation of T cells

Question 12

Which lymphoid organ is most likely to atrophy after adolescence but still produces immunocompetent cells?

Accepted Answer

Thymus

Question 13

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

Accepted Answer

Protecting mucosal surfaces from pathogens

Question 14

Which of the following is TRUE regarding lymphatic capillaries?

Accepted Answer

They are blind-ended and can take up large molecules and particles

Question 15

Which of the following best explains why lymphatic flow increases during physical activity?

Accepted Answer

Skeletal muscle contractions and breathing movements propel lymph

Question 16

Which structure acts as a route for pathogens or cancer cells to travel throughout the body?

Accepted Answer

Lymphatic capillaries

Question 17

Which of the following is a consequence of blocked lymphatic drainage?

Accepted Answer

Lymphedema

Question 18

Which lymphoid organ contains white pulp and red pulp, and is involved in both immune response and blood filtration?

Accepted Answer

Spleen

Question 19

Which of the following is a function of tonsillar crypts?

Accepted Answer

Trapping bacteria and particulate matter for immune cell activation

Question 20

Which cell type is found in the cortex of the thymus and is responsible for the bulk of thymic cells?

Accepted Answer

Dividing T lymphocytes

The Lymphatic System and Lymphoid Organs & Tissues

Study Guide - Practice Questions