Question 1

Which of the following best describes the primary function of the integumentary system in immunity?

Accepted Answer

It acts as a nearly impenetrable barrier to block entry of pathogens.

Question 2

Which of the following is NOT a type of pathogen that can harm the human body?

Accepted Answer

Red blood cells

Question 3

During the inflammatory response, which step involves the recruitment of phagocytes to the site of infection?

Accepted Answer

Step 3: Phagocytes migrate to the affected tissue.

Question 4

Which equation best represents the relationship between antigen exposure and antibody production during the secondary immune response?

Accepted Answer

$$Antibody_{secondary} \u003e Antibody_{primary}$$

Question 5

Which of the following is a correct description of clonal selection in adaptive immunity?

Accepted Answer

Lymphocytes with receptors specific to an antigen proliferate and differentiate into effector and memory cells.

Question 6

A patient receives a flu vaccination. Which immune response is primarily responsible for long-term protection against the influenza virus?

Accepted Answer

Adaptive immunity via memory B and T cells

Question 7

Which of the following best explains why flu vaccinations need to be updated annually?

Accepted Answer

The influenza virus mutates rapidly, changing its surface antigens.

Question 8

Which of the following is a function of antibodies in the immune response?

Accepted Answer

They recruit complement proteins to lyse pathogen membranes.

Question 9

Which cell type is responsible for cell-mediated immunity?

Accepted Answer

Cytotoxic T cells

Question 10

A person with type 1 diabetes has an autoimmune disorder. Which immune cells are most directly involved in destroying insulin-producing cells in the pancreas?

Accepted Answer

Cytotoxic T cells

Question 11

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

Accepted Answer

They form pores in pathogen membranes, leading to cell lysis.

Question 12

Which equation represents the process of apoptosis initiated by cytotoxic T cells?

Accepted Answer

$$Target_{cell} + Cytotoxic\ T_{cell} \rightarrow Apoptosis$$

Question 13

Which of the following is a characteristic of the secondary immune response compared to the primary response?

Accepted Answer

It is faster and stronger due to the presence of memory cells.

Question 14

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

Accepted Answer

Innate immunity provides immediate, non-specific defense; adaptive immunity is specific and develops memory.

Question 15

Which of the following scenarios best illustrates an allergic reaction?

Accepted Answer

B cells produce antibodies against harmless pollen proteins.

Question 16

Which of the following is a correct sequence of events in the inflammatory response?

Accepted Answer

Vasodilation → Increased capillary permeability → Phagocyte migration → Tissue repair

Question 17

Which of the following best explains the role of memory cells in immunity?

Accepted Answer

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

Question 18

Which of the following is a function of helper T cells in the immune response?

Accepted Answer

They activate B cells and cytotoxic T cells by releasing cytokines.

Question 19

Which equation best represents the process of antibody-mediated neutralization of pathogens?

Accepted Answer

$$Antibody + Pathogen \rightarrow Neutralized\ Pathogen$$

Question 20

Which of the following is a real-world example of innate immunity?

Accepted Answer

Skin prevents bacteria from entering the body after a minor cut.

Chapter 27: The Immune System – Structure, Function, and Responses

Guida di studio - Domande di pratica

Study guide - Flashcard