Question 1

Which of the following best describes the primary function of lymphatic capillaries in the small intestine, also known as lacteals?

Accepted Answer

They transport absorbed fats from the intestine into the bloodstream.

Question 2

A patient presents with severe swelling of the lower limb, thickened skin, and a history of travel to a tropical region. Which condition is most likely, and what is its primary cause?

Accepted Answer

Elephantiasis caused by parasitic infestation of lymphatic vessels

Question 3

Which lymphatic duct drains lymph from the right upper extremity and right side of the head, neck, and upper torso?

Accepted Answer

Right lymphatic duct

Question 4

What is the main difference between afferent and efferent lymphatic vessels in a lymph node?

Accepted Answer

Afferent vessels carry lymph toward the node, efferent vessels carry lymph away from the node.

Question 5

Which of the following is a function of the spleen?

Accepted Answer

Phagocytosis of bacteria and old red blood cells

Question 6

A patient develops swelling and tenderness of lymph nodes after a finger infection. What is the most likely diagnosis?

Accepted Answer

Lymphadenitis

Question 7

Which of the following best describes the role of complement proteins in immunity?

Accepted Answer

They form a cascade that results in the lysis of foreign cells.

Question 8

Which type of immunity is characterized by the ability to recognize, respond to, and remember specific harmful substances?

Accepted Answer

Adaptive (specific) immunity

Question 9

Which immune cell type is responsible for killing virus-infected or tumor cells without prior exposure to the antigen?

Accepted Answer

Natural killer (NK) cells

Question 10

A newborn is diagnosed with severe combined immune deficiency (SCID). What is the underlying cause?

Accepted Answer

Improper lymphocyte development before birth

Question 11

Which of the following best explains why cancer cells can metastasize through the lymphatic system?

Accepted Answer

Lymphatic vessels provide a pathway for cancer cells to travel to other parts of the body.

Question 12

Which of the following is a key difference between innate and adaptive immunity?

Accepted Answer

Innate immunity is rapid and nonspecific, adaptive immunity is slower and specific.

Question 13

Which of the following scenarios is an example of artificial passive immunity?

Accepted Answer

A patient receives an injection of antibodies after exposure to rabies.

Question 14

Which of the following best describes the process of phagocytosis?

Accepted Answer

Engulfment and digestion of foreign particles by immune cells

Question 15

A patient develops a rash after contact with poison ivy, which appears 48 hours later. This is an example of:

Accepted Answer

Delayed hypersensitivity involving cell-mediated immunity

Question 16

Which of the following is a function of helper T cells?

Accepted Answer

Release chemicals that activate macrophages and help activate B cells

Question 17

Which of the following best describes the role of memory cells in adaptive immunity?

Accepted Answer

They provide a faster and stronger response upon re-exposure to the same antigen.

Question 18

Which of the following is a possible consequence of removing lymph nodes during breast cancer surgery?

Accepted Answer

Development of lymphedema in the affected arm

Question 19

Which of the following best describes the function of antibodies in the immune response?

Accepted Answer

They bind to specific antigens, neutralize toxins, and promote phagocytosis.

Question 20

Which of the following is an example of alloimmunity?

Accepted Answer

A mother’s immune system reacts against fetal antigens during pregnancy.

Lymphatic System and Immunity: Structured Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards