Question 1

Which of the following best describes the primary function of lymph nodes in the lymphatic system?

Accepted Answer

They filter lymph and trap pathogens, preventing their spread.

Question 2

Which tissue type is NOT typically found in the general structure of lymphatic vessels (excluding lymphatic capillaries)?

Accepted Answer

Stratified squamous tissue

Question 3

A patient has their thymus surgically removed at age 7. Which of the following is the most likely consequence?

Accepted Answer

Impaired maturation of T lymphocytes

Question 4

Which of the following is the correct sequence for lymph flow through the lymphatic system?

Accepted Answer

Lymphatic capillaries → collecting vessels → lymphatic trunks → lymphatic ducts

Question 5

Which of the following best describes the role of complement proteins in the immune response?

Accepted Answer

They enhance inflammation and form the membrane attack complex (MAC) to lyse pathogens.

Question 6

Which of the following is a function of the tonsils?

Accepted Answer

Trapping and destroying pathogens entering through the mouth and nose

Question 7

Which of the following best explains why the secondary immune response is more effective than the primary immune response?

Accepted Answer

Memory cells allow for a faster and stronger antibody production upon re-exposure.

Question 8

Which of the following is TRUE regarding the difference between CD4 and CD8 T cells?

Accepted Answer

CD4 T cells are helper T cells that bind to MHC II, while CD8 T cells are cytotoxic and bind to MHC I.

Question 9

A newborn receives antibodies from its mother via the placenta. This is an example of:

Accepted Answer

Naturally acquired passive humoral immunity

Question 10

Which of the following is the correct formula for calculating the number of antigen binding sites on an IgM antibody pentamer?

Accepted Answer

$$n = 2 	imes 5$$

Question 11

Which of the following is NOT a function of interferons (IFN)?

Accepted Answer

Directly neutralizing bacterial toxins in the bloodstream

Question 12

Which of the following best describes the process of phagocytosis?

Accepted Answer

The engulfment and digestion of foreign particles by white blood cells

Question 13

Which of the following is the main function of the Peyer's patches in the small intestine?

Accepted Answer

Monitoring and protecting against pathogens in the gut

Question 14

Which of the following is the correct order of the three lines of defense in the immune system?

Accepted Answer

Physical barriers → Innate immunity → Adaptive immunity

Question 15

A patient receives antivenom after a poisonous snake bite. This is an example of:

Accepted Answer

Artificially acquired passive humoral immunity

Question 16

Which of the following cell types is most affected by HIV infection?

Accepted Answer

CD4 T helper cells

Question 17

Which of the following is TRUE regarding antigen presenting cells (APCs)?

Accepted Answer

APCs include dendritic cells, macrophages, and B cells.

Question 18

Which of the following is the correct formula for the calculation of the total number of antibodies produced by plasma cells if each cell produces $$x$$ antibodies per hour and there are $$y$$ plasma cells?

Accepted Answer

$$Total = x 	imes y$$

Question 19

Which of the following best describes the difference between humoral and cell-mediated immunity?

Accepted Answer

Humoral immunity is associated with antibody production by B lymphocytes, while cell-mediated immunity involves direct killing by T lymphocytes.

Question 20

Which of the following is the correct formula for the neutralization of toxins by antibodies?

Accepted Answer

$$Antibody + Toxin \rightarrow Antibody{-}Toxin\ Complex$$

Lymphatic and Immune System: Study Guide Notes

Study Guide - Practice Questions

Study Guide - Flashcards