Question 1

Which of the following best describes the primary function of the lymphatic system?

Accepted Answer

To return fluids leaked from blood vessels back to the blood

Question 2

Which structure is responsible for absorbing digested fats and delivering fatty lymph (chyle) to the blood?

Accepted Answer

Lacteals

Question 3

A patient presents with severe localized edema after cancer surgery. Which condition is most likely responsible?

Accepted Answer

Lymphedema

Question 4

Which of the following is NOT a mechanism that propels lymph through lymphatic vessels?

Accepted Answer

Active pumping by the heart

Question 5

Which lymphatic duct drains lymph from the right upper arm and right side of the head and thorax?

Accepted Answer

Right lymphatic duct

Question 6

Which cell type is primarily responsible for producing antibodies?

Accepted Answer

Plasma cells

Question 7

What is the main function of the white pulp in the spleen?

Accepted Answer

Site of immune function

Question 8

Which of the following best explains why lymph nodes can become secondary cancer sites?

Accepted Answer

They trap metastasizing cancer cells traveling in lymph

Question 9

Which of the following is a unique feature of the thymus compared to other lymphoid organs?

Accepted Answer

Its stroma is made up of epithelial cells

Question 10

A child undergoes a splenectomy after trauma. Which organs will primarily take over the spleen’s functions?

Accepted Answer

Liver and bone marrow

Question 11

Which of the following best describes the function of tonsillar crypts?

Accepted Answer

They trap bacteria and particulate matter to activate immune cells

Question 12

Which of the following is TRUE regarding lymphatic capillaries?

Accepted Answer

They are more permeable than blood capillaries

Question 13

Which of the following is a function of Peyer’s patches in the small intestine?

Accepted Answer

Destruction of bacteria and generation of memory lymphocytes

Question 14

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

Accepted Answer

Afferent vessel → subcapsular sinus → medullary sinus → efferent vessel

Question 15

Which of the following is a key difference between primary and secondary lymphoid organs?

Accepted Answer

Primary organs are where lymphocytes mature; secondary organs are where they encounter antigens

Question 16

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

Accepted Answer

It enhances the milking action of skeletal muscles and pressure changes during breathing

Question 17

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

Accepted Answer

Destruction of old red blood cells and bloodborne pathogens

Question 18

Which of the following statements about the thymus is correct?

Accepted Answer

It is most active during childhood and atrophies after adolescence

Question 19

Which of the following best describes the role of dendritic cells in lymphoid tissue?

Accepted Answer

They capture antigens and help activate T cells

Question 20

A patient presents with painful, red lines under the skin following a bacterial infection. Which lymphatic condition is most likely present?

Accepted Answer

Lymphangitis

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

Study Guide - Practice Questions