Question 1

Which of the following best describes the primary function of lymphatic trunks in the human body?

Accepted Answer

They transport lymph from smaller lymphatic vessels to larger ducts.

Question 2

A patient has a splenic injury resulting in removal of the spleen. Which of the following consequences is most likely?

Accepted Answer

Impaired removal of old or damaged red blood cells.

Question 3

Which lymphoid organ is primarily responsible for the maturation of T lymphocytes?

Accepted Answer

Thymus

Question 4

Which of the following is NOT a function of lymph nodes?

Accepted Answer

Production of erythrocytes

Question 5

A person is exposed to a pathogen for the first time. Which immune response is primarily activated?

Accepted Answer

Primary adaptive response

Question 6

Which of the following best describes the difference between innate and adaptive immunity?

Accepted Answer

Adaptive immunity develops memory, while innate immunity does not.

Question 7

Which cell type is responsible for antibody production in the adaptive immune response?

Accepted Answer

B lymphocytes (plasma cells)

Question 8

A patient receives a vaccine containing inactivated virus. Which type of immunity is primarily stimulated?

Accepted Answer

Active adaptive immunity

Question 9

Which of the following best explains the role of MHC Class I molecules in the immune system?

Accepted Answer

They present antigens to CD8+ cytotoxic T cells.

Question 10

A patient with HIV has a reduced number of CD4+ T cells. Which of the following consequences is most likely?

Accepted Answer

Impaired activation of cytotoxic T cells and B cells

Question 11

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

Accepted Answer

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

Question 12

Which of the following is a correct sequence of events in the activation of a cytotoxic T cell?

Accepted Answer

Antigen presentation by MHC I → Recognition by CD8+ T cell → Clonal expansion

Question 13

Which of the following is a key difference between primary and secondary lymphoid organs?

Accepted Answer

Primary lymphoid organs are where lymphocytes mature, while secondary organs are where immune responses are initiated.

Question 14

A patient is exposed to the same pathogen twice. The second exposure results in a faster and stronger immune response. Which concept explains this phenomenon?

Accepted Answer

Immunological memory

Question 15

Which of the following best describes the role of macrophages in the immune system?

Accepted Answer

They present antigens to T cells and phagocytose pathogens.

Question 16

Which of the following is a characteristic of the adaptive immune response?

Accepted Answer

It involves memory cells that respond to previously encountered antigens.

Question 17

Which of the following best explains why lymphatic capillaries are highly permeable?

Accepted Answer

They have overlapping endothelial cells that function as one-way valves.

Question 18

Which of the following is a function of the tonsils in the lymphatic system?

Accepted Answer

Trapping pathogens entering through the mouth and nose

Question 19

Which of the following best describes the process of clonal selection in the adaptive immune system?

Accepted Answer

Activation and proliferation of lymphocytes specific to an encountered antigen

Question 20

Which of the following is the correct formula for calculating the rate of antibody production ($$A) $$given the number of plasma cells ($$N) $$and the average production rate per cell ($$r$$)?

Accepted Answer

$$A = N 	imes r$$

Lymphatic System and Immune System Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards