Q: Which of the following equations best represents the volume of lymph returned to the blood per day?

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

Question 1

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

Accepted Answer

Transporting oxygen directly to tissues

Question 2

Lymphatic capillaries differ from blood capillaries in which of the following ways?

Accepted Answer

They possess endothelial minivalves that allow one-way flow of lymph

Question 3

During inflammation, lymphatic capillaries can absorb which of the following?

Accepted Answer

Cell debris, pathogens, and cancer cells

Question 4

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

Accepted Answer

Right lymphatic duct

Question 5

What is the consequence of lymphatic vessel blockage, as seen in elephantiasis?

Accepted Answer

Enormous swelling (edema) due to accumulation of lymph

Question 6

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

Accepted Answer

Thymus

Question 7

Where does maturation of B lymphocytes occur?

Accepted Answer

Red bone marrow

Question 8

Which of the following best describes the function of Peyer’s Patches?

Accepted Answer

Destroying bacteria and preventing them from breaching the intestinal wall

Question 9

Which area of the spleen is primarily involved in immune functions and lymphocyte maturation?

Accepted Answer

White pulp

Question 10

A patient presents with swollen lymph nodes in the cervical region. What is the most likely cause?

Accepted Answer

Infection or cancer

Question 11

Which of the following equations best represents the volume of lymph returned to the blood per day?

Accepted Answer

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

Question 12

Which of the following is TRUE regarding the thymus?

Accepted Answer

It secretes hormones that cause maturation of T lymphocytes

Question 13

Which of the following is a major function of the spleen?

Accepted Answer

Cleansing the blood and salvaging iron for later use

Question 14

Which of the following lymphatic structures is responsible for filtering air and removing foreign materials?

Accepted Answer

Tonsils

Question 15

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

Accepted Answer

Lymph enters through afferent vessels, is filtered, and exits through efferent vessels

Question 16

Which of the following is TRUE about lymphatic collecting vessels?

Accepted Answer

They have more internal valves and more anastomoses than veins

Question 17

Which of the following is a primary lymphoid organ?

Accepted Answer

Red bone marrow

Question 18

Which of the following is TRUE regarding lymphatic nodules?

Accepted Answer

They are solid, spherical bodies with germinal centers composed of maturing B cells

Question 19

Which of the following best describes the role of skeletal and respiratory pumps in lymph movement?

Accepted Answer

They help move lymph through lymphatic vessels by creating pressure gradients

Question 20

A patient with a parasitic worm infection develops severe swelling in the lower limbs. Which equation best describes the relationship between lymphatic blockage and edema?

Accepted Answer

$$Edema \propto \frac{1}{Flow_{lymph}}$$

The Lymphatic System: Structure, Function, and Clinical Relevance

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