Question 1

Which of the following best describes the primary function of the lymphatic capillaries compared to blood capillaries?

Accepted Answer

They absorb large molecules like proteins and lipids due to their greater permeability.

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 lower limb

Question 3

Which structure is responsible for the maturation and education of pre-T cells, and what percentage of T cells survive this process?

Accepted Answer

Thymus; 2%

Question 4

During digestion, dietary lipids are absorbed by specialized lymphatic capillaries in the small intestine. What is the name of these capillaries and the lipid-rich lymph they carry?

Accepted Answer

Lacteals; chyle

Question 5

Which of the following equations best represents the relationship between lymph flow ($$Q$$), pressure difference ($$\Delta P$$), and resistance ($$R) in $$the lymphatic system?

Accepted Answer

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

Question 6

A patient with a damaged spleen is at increased risk for which of the following complications?

Accepted Answer

Reduced immune response due to loss of white pulp function

Question 7

Which lymphatic trunk is responsible for draining lymph from the stomach, intestines, pancreas, spleen, and liver?

Accepted Answer

Intestinal trunk

Question 8

If a person’s skeletal muscle pump is compromised due to immobility, what is the most likely consequence regarding lymph flow?

Accepted Answer

Lymph flow decreases, increasing risk of edema.

Question 9

Which of the following best explains why lymphatic capillaries are absent in avascular tissues such as cartilage and the cornea?

Accepted Answer

Avascular tissues lack blood supply, so lymphatic capillaries cannot function without it.

Question 10

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

Accepted Answer

Removes defective blood cells and stores platelets

Question 11

A child with a congenital absence of tonsils would most likely have reduced immune protection in which area?

Accepted Answer

Junction of oral cavity and oropharynx, and nasal cavity and nasopharynx

Question 12

Which of the following best describes the role of anchoring filaments in lymphatic capillaries?

Accepted Answer

They pull lymphatic capillary walls apart to allow more fluid to enter when interstitial fluid accumulates.

Question 13

Which of the following statements about lymph nodes is correct?

Accepted Answer

The cortex contains B cells in the outer layer and T cells in the deeper cortex.

Question 14

A patient is diagnosed with a deficiency in fat-soluble vitamins (A, D, E, K). Which part of the lymphatic system is most likely impaired?

Accepted Answer

Lymphatic vessels transporting dietary lipids

Question 15

Which of the following best describes the difference between interstitial fluid and lymph?

Accepted Answer

Lymph is found within lymphatic vessels and tissues, while interstitial fluid is found between cells.

Question 16

Which of the following equations would you use to estimate the volume of lymph ($$V) $$filtered by lymph nodes over time ($$t$$), given a constant flow rate ($$Q$$)?

Accepted Answer

$$V = Q 	imes t$$

Question 17

Which of the following is NOT a primary lymphatic organ?

Accepted Answer

Spleen

Question 18

Which lymphatic duct receives lymph from the left side of the head, neck, chest, left upper limb, and all areas inferior to the ribs?

Accepted Answer

Thoracic duct

Question 19

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

Accepted Answer

It provides immune protection in mucous membranes lining the gastrointestinal, respiratory, urinary, and reproductive tracts.

Question 20

A patient with a mutation affecting the formation of memory B cells would most likely have impaired function in which part of the lymph node?

Accepted Answer

Secondary lymphatic nodule

Lymphatic System: Structure, Function, and Major Organs

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