$$J_v = L_p \times S \times [(P_c - P_i) - \sigma (\pi_c - \pi_i)]$$

Question 1

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

Accepted Answer

Production of red blood cells

Question 2

Lymph from the right arm, right side of the head, and right thorax drains into which vessel before rejoining the cardiovascular system?

Accepted Answer

Right lymphatic duct

Question 3

Which structure is responsible for the maturation of T lymphocytes and is most active during childhood?

Accepted Answer

Thymus

Question 4

Which of the following best describes the mechanism by which lymph is moved through lymphatic vessels?

Accepted Answer

Contraction of skeletal muscles and presence of one-way valves

Question 5

Which lymphoid organ is responsible for filtering pathogens from the blood and destroying old erythrocytes?

Accepted Answer

Spleen

Question 6

Which of the following is a correct sequence of lymphatic vessels from smallest to largest?

Accepted Answer

Lymphatic capillaries → Collecting vessels → Lymphatic trunks → Lymphatic ducts

Question 7

Which of the following cells is most effective at phagocytosing pathogens and presenting antigens to T cells?

Accepted Answer

Macrophage

Question 8

A patient presents with swelling in the lower limb after lymphatic vessel removal during cancer surgery. What is the most likely diagnosis?

Accepted Answer

Lymphedema

Question 9

Which of the following is a function of the tonsils?

Accepted Answer

Trap and destroy pathogens entering through the pharynx

Question 10

Which of the following best describes the role of Peyer’s patches?

Accepted Answer

Defend against gut bacteria in the small intestine

Question 11

Which of the following statements about lymphatic capillaries is TRUE?

Accepted Answer

They are blind-ended and allow one-way flow of lymph

Question 12

Which equation best represents the relationship between capillary filtration and lymph formation?

Accepted Answer

$$J_v = L_p 	imes S 	imes [(P_c - P_i) - \sigma (\pi_c - \pi_i)]$$

Question 13

Which of the following is a difference between lymphatic tissue and a lymphatic organ?

Accepted Answer

Lymphatic organs have a connective tissue capsule, while lymphatic tissue does not

Question 14

Which of the following is a specialized lymphatic vessel responsible for the absorption of dietary fats?

Accepted Answer

Lacteal

Question 15

Which of the following is a correct description of the spleen’s white pulp?

Accepted Answer

It filters pathogens from blood and contains leukocytes and dendritic cells

Question 16

Which lymphatic organ does NOT trap pathogens but is essential for T cell maturation?

Accepted Answer

Thymus

Question 17

Which of the following is a plausible consequence of blockage in a lymphatic vessel?

Accepted Answer

Accumulation of interstitial fluid and tissue swelling

Question 18

Which of the following best explains why lymphatic vessels have valves?

Accepted Answer

To prevent lymph from flowing backward due to the absence of a central pump

Question 19

Which of the following is a key difference between the lymphatic and cardiovascular systems?

Accepted Answer

The lymphatic system returns excess interstitial fluid to the blood, while the cardiovascular system circulates blood throughout the body

Question 20

Which of the following is a real-world example of lymphatic system dysfunction?

Accepted Answer

Lymphedema following removal of lymph nodes during cancer surgery

The Lymphatic System and Immunity: Structure, Function, and Integration

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