Question 1

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

Accepted Answer

They transport lipids from the digestive tract as chyle.

Question 2

A patient has a blockage in the right lymphatic duct. Which region of the body would most likely experience lymphedema as a result?

Accepted Answer

Right arm

Question 3

Which of the following is NOT a difference between lymphatic capillaries and blood capillaries?

Accepted Answer

Lymphatic capillaries have a regular, stable outline.

Question 4

Which of the following best explains why lymph nodes are strategically located throughout the body?

Accepted Answer

To filter lymph and stop pathogens before they reach vital organs.

Question 5

A patient with a splenectomy (removal of the spleen) is at increased risk for which of the following?

Accepted Answer

Impaired immune response to blood-borne pathogens.

Question 6

Which of the following cells is responsible for the destruction of virus-infected cells and cancer cells by releasing perforin?

Accepted Answer

Natural Killer (NK) cells

Question 7

Which lymphatic structure is responsible for draining lymph from both lower limbs and the intestinal trunk before entering the thoracic duct?

Accepted Answer

Cisterna chyli

Question 8

Which of the following best describes the role of the thymus in immunity?

Accepted Answer

It is the site of T cell maturation and differentiation.

Question 9

Which of the following is a function of the red pulp in the spleen?

Accepted Answer

Removal of old or abnormal red blood cells by macrophages

Question 10

Which of the following best describes the process of lymphopoiesis?

Accepted Answer

The production of lymphocytes in red bone marrow, thymus, and peripheral lymphoid tissues.

Question 11

A patient presents with swelling in the lower left limb. Which lymphatic structure is most likely obstructed?

Accepted Answer

Thoracic duct

Question 12

Which of the following is a characteristic of innate (nonspecific) immunity?

Accepted Answer

It provides immediate defense against any type of invading agent.

Question 13

Which of the following best describes the function of Mucosa-Associated Lymphatic Tissue (MALT)?

Accepted Answer

It is a collection of unencapsulated lymphoid tissue associated with mucosal surfaces to protect against pathogens.

Question 14

Which of the following is the correct sequence for the flow of lymph from peripheral tissues to the venous system?

Accepted Answer

Lymphatic capillaries → lymphatic vessels → lymphatic trunks → collecting ducts → subclavian veins

Question 15

Which of the following best explains why lymphatic vessels contain one-way valves?

Accepted Answer

To prevent the backflow of lymph and ensure unidirectional flow toward the heart.

Question 16

Which of the following is a function of helper T cells in the adaptive immune response?

Accepted Answer

Stimulating proliferation and differentiation of T cells and B cells.

Question 17

Which of the following best describes the role of lymph nodes in the immune response?

Accepted Answer

They filter lymph and activate immune cells if pathogens are detected.

Question 18

Which of the following best describes the difference between innate and adaptive immunity?

Accepted Answer

Innate immunity provides immediate, nonspecific defense; adaptive immunity targets specific pathogens and develops memory.

Question 19

Which of the following best describes the function of cytotoxic T cells?

Accepted Answer

They attack and destroy virus-infected cells by releasing perforin.

Question 20

Which of the following is a correct statement about lymphoid organs?

Accepted Answer

They include the spleen, thymus, and lymph nodes.

The Lymphatic System and Immunity: Structure, Function, and Cellular Components

Study Guide - Practice Questions