Question 1

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

Accepted Answer

To collect excess interstitial fluid and return it to the bloodstream

Question 2

Which of the following structures is responsible for absorbing dietary fats and delivering them to the bloodstream?

Accepted Answer

Lacteals

Question 3

A patient presents with severe localized edema after lymph node removal during cancer surgery. What is the most likely diagnosis?

Accepted Answer

Lymphedema

Question 4

Which of the following mechanisms does NOT contribute to lymph transport?

Accepted Answer

Active pumping by lymphatic capillaries

Question 5

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

Accepted Answer

Right lymphatic duct

Question 6

Which of the following is a distinguishing feature of lymphatic capillaries compared to blood capillaries?

Accepted Answer

They have one-way minivalves formed by overlapping endothelial cells

Question 7

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

Accepted Answer

They trap metastasizing cancer cells within their structure

Question 8

Which of the following is TRUE regarding the thymus?

Accepted Answer

It is most active during childhood and atrophies with age

Question 9

A patient with a ruptured spleen requires a splenectomy. Which organ(s) will take over most of the spleen’s functions after removal?

Accepted Answer

Liver and bone marrow

Question 10

Which of the following is a function of the white pulp of the spleen?

Accepted Answer

Immune surveillance and lymphocyte proliferation

Question 11

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

Accepted Answer

They trap bacteria and particulate matter to expose them to immune cells

Question 12

Which of the following lymphoid organs is NOT considered a secondary lymphoid organ?

Accepted Answer

Thymus

Question 13

Which of the following statements about lymph flow through a lymph node is correct?

Accepted Answer

Lymph enters via afferent vessels and exits via efferent vessels

Question 14

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 15

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

Accepted Answer

Its stroma is made of epithelial cells, not reticular fibers

Question 16

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 17

A patient presents with painful red lines under the skin following an infection. What is the most likely diagnosis?

Accepted Answer

Lymphangitis

Question 18

Which of the following best describes the function of lymphoid follicles?

Accepted Answer

They are solid, spherical bodies with germinal centers for B cell proliferation

Question 19

Which of the following is TRUE regarding the blood-thymus barrier?

Accepted Answer

It isolates immature T lymphocytes from antigens to prevent premature activation

Question 20

Which of the following best explains why cancer-infiltrated lymph nodes are usually not painful?

Accepted Answer

They are overwhelmed by cancer cells but not by inflammatory processes

The Lymphatic System and Lymphoid Organs: Structured Study Notes

Study Guide - Practice Questions