Question 1

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

Accepted Answer

Returning interstitial fluid and leaked plasma proteins back to the blood

Question 2

Which structure is responsible for absorbing dietary fats and delivering them as chyle to the blood?

Accepted Answer

Lacteals

Question 3

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

Accepted Answer

Lymphedema

Question 4

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

Accepted Answer

Afferent vessel → subcapsular sinus → medullary sinus → efferent vessel

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 of the following cells is primarily responsible for producing antibodies?

Accepted Answer

Plasma cells

Question 7

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

Accepted Answer

Impaired immune surveillance and increased infection risk

Question 8

Which of the following best describes the function of the thymus?

Accepted Answer

Site of T cell maturation

Question 9

Which of the following is NOT a secondary lymphoid organ?

Accepted Answer

Thymus

Question 10

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

Accepted Answer

High-pressure pumping by the heart

Question 11

Which of the following best describes the role of reticular fibers in lymphoid organs?

Accepted Answer

They form a network-like stroma that supports immune cells

Question 12

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

Accepted Answer

Destroy bacteria and generate memory lymphocytes

Question 13

A patient presents with swollen, tender lymph nodes filled with pus after a bacterial infection. What is the most likely diagnosis?

Accepted Answer

Buboes

Question 14

Which of the following statements about lymphatic capillaries is TRUE?

Accepted Answer

They have one-way minivalves formed by overlapping endothelial cells

Question 15

Which of the following best explains why lymph flow through a lymph node is slow?

Accepted Answer

There are fewer efferent vessels than afferent vessels

Question 16

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

Accepted Answer

Lacks reticular fibers and is made of epithelial tissue

Question 17

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

Accepted Answer

They trap bacteria and particulate matter to activate immune cells

Question 18

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

Accepted Answer

Destruction of old blood cells and bloodborne pathogens

Question 19

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

Accepted Answer

They capture antigens and help activate T cells

Question 20

A patient in a tropical region develops massive swelling of the lower limb due to roundworm infection blocking lymphatics. What is this condition called?

Accepted Answer

Elephantiasis

The Lymphatic System and Lymphoid Organs and Tissues: Study Guide

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