Question 1

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

Accepted Answer

It maintains blood volume by returning tissue fluid to the bloodstream.

Question 2

A patient has a blockage in the thoracic duct. Which of the following regions would most likely experience impaired lymph drainage?

Accepted Answer

Left arm, left thorax, and entire lower body

Question 3

Which lymphatic structure is responsible for draining lymph from the right head, right neck, right arm, and right thorax?

Accepted Answer

Right lymphatic duct

Question 4

If a person’s spleen is damaged and removed, which of the following functions would be most affected?

Accepted Answer

Removal of old and damaged red blood cells

Question 5

Which of the following best explains why lymphatic capillaries are highly permeable?

Accepted Answer

They are blind-ended and have loosely overlapping endothelial cells.

Question 6

A biopsy reveals dense clusters of lymphocytes in reticular connective tissue. Which structure is most likely being examined?

Accepted Answer

Lymphatic nodules

Question 7

Which of the following is TRUE regarding lymph flow?

Accepted Answer

Lymph always flows toward the heart.

Question 8

A child with a congenital absence of the thymus would most likely have deficiencies in which type of immune cell?

Accepted Answer

T cells

Question 9

Which of the following is a primary lymphatic organ where lymphocytes are produced and mature?

Accepted Answer

Red bone marrow

Question 10

Which region of the spleen is primarily responsible for immune surveillance?

Accepted Answer

White pulp

Question 11

A patient presents with swelling in the inguinal region. Which lymph node group is most likely involved?

Accepted Answer

Inguinal

Question 12

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

Accepted Answer

Producing insulin

Question 13

Which of the following lymphocyte types is responsible for directly killing infected cells?

Accepted Answer

Cytotoxic T cells

Question 14

Which structure is most likely to contain loosely arranged lymphocytes in mucous membranes?

Accepted Answer

Diffuse lymphatic tissue

Question 15

A patient has an infection in the small intestine. Which lymphatic structure is most likely to respond?

Accepted Answer

Peyer's patches

Question 16

Which of the following equations best represents the relationship between lymphatic flow ($$F$$), pressure gradient ($$\Delta P$$), and resistance ($$R$$)?

Accepted Answer

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

Question 17

Which of the following is a secondary lymphatic organ where immune activation occurs?

Accepted Answer

Lymph nodes

Question 18

Which of the following best describes the pathway of lymph from the lower body to the bloodstream?

Accepted Answer

Lymphatic capillaries → thoracic duct → left subclavian vein

Question 19

Which of the following is TRUE about the number of vessels entering and leaving a lymph node?

Accepted Answer

There are many afferent vessels and only one efferent vessel.

Question 20

Which of the following best describes the function of MALT (mucosa-associated lymphoid tissue)?

Accepted Answer

It provides immune defense in mucous membranes.

Chapter 23: The Lymphatic System & Immunity – Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards