Question 1

Which of the following best describes the primary function of lymph nodes in the lymphatic system?

Accepted Answer

They filter lymph, removing microorganisms and debris.

Question 2

A patient has swelling in the right upper arm and right side of the head. Which lymphatic duct is most likely obstructed?

Accepted Answer

Right lymphatic duct

Question 3

Which mechanism does NOT contribute to lymph transport in the body?

Accepted Answer

High-pressure arterial flow

Question 4

Lymphatic capillaries are more permeable than blood capillaries. Which of the following is a consequence of this increased permeability?

Accepted Answer

Lymphatic capillaries can absorb large proteins and pathogens.

Question 5

Which lymphoid organ is the site of T cell maturation and is most active during childhood?

Accepted Answer

Thymus

Question 6

A splenectomy (removal of the spleen) in a child under 12 years old may be less detrimental because:

Accepted Answer

The liver and bone marrow can take over most spleen functions.

Question 7

Which of the following equations best represents the volume of interstitial fluid returned to blood daily by the lymphatic system?

Accepted Answer

$V_{lymph} = 3\ 	ext{L/day}$

Question 8

Which of the following is NOT a location where lymphatic capillaries are typically found?

Accepted Answer

Central nervous system (CNS)

Question 9

Which cell type is responsible for producing the reticular fibers that form the stroma of lymphoid organs?

Accepted Answer

Reticular cells

Question 10

A patient presents with a bacterial infection in the intestine. Which lymphoid organ is most likely to help prevent bacteria from breaching the intestinal wall?

Accepted Answer

Appendix

Question 11

Which of the following best describes the structure of a typical lymph node?

Accepted Answer

It has two histologically distinct regions: cortex and medulla.

Question 12

Which of the following is a function of the spleen?

Accepted Answer

Cleanses blood of aged blood cells and platelets.

Question 13

Which of the following statements about lymph transport is correct?

Accepted Answer

Physical activity increases lymph flow, aiding in faster healing.

Question 14

Which of the following is a correct pairing of lymphoid organ and its primary function?

Accepted Answer

Thymus – maturation of T cells

Question 15

Which of the following best explains why lymphatic vessels are a one-way system?

Accepted Answer

Valves prevent backflow, ensuring lymph flows only toward the heart.

Question 16

Which of the following is a consequence of immobilizing an injured area in terms of lymphatic function?

Accepted Answer

Decreased lymph flow, slowing removal of inflammatory material.

Question 17

Which of the following is true regarding lymphoid follicles (nodules)?

Accepted Answer

They contain germinal centers of proliferating B cells.

Question 18

Which of the following is a correct description of the thoracic duct?

Accepted Answer

It drains lymph from the rest of the body except the right upper arm and right side of the head and thorax.

Question 19

Which of the following cell types is NOT considered an immune system cell found in lymphoid tissue?

Accepted Answer

Reticular cells

Question 20

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

Accepted Answer

They offer a place for lymphocytes to become activated and mount an attack against antigens.

Chapter 20: The Lymphatic System and Lymphoid Organs and Tissues – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards