12. What is the primary role of the spleen in the human body? A) Filtration of pathogens and breakdown of senescent red blood cells B) Hematopoiesis and production of red blood cells C) Synthesis of digestive enzymes for nutrient absorption D) Storage and release of bile to aid in digestion

Q: The first exposure of a person to an allergen results in the production of the IgE class of immut…

A: In the immune response, mast cells are essential, especially during allergic responses. During a…

Q: Which of the following about basophils and mast cells is true? 1) basophils make leukotrienes, and…

A: Introduction: a particular sort of blood cell that is produced in the bone marrow and present in…

Q: 1) The immune system and the brain are (two correct answers) :  unrelated to one another  strictly…

A: Immune system A network of biological processes called the immune system guards an organism against…

Q: Which of the following is not true about the complementsystem?(a) It is a set of more than 20…

A: The complement system is otherwise known as complement cascade and is associated with the immune…

Q: 7. Which cell type is primarily responsible for HIV's transport to the brain? A) T cells B)…

A: HIV, or the human immunodeficiency virus, is a virus that targets CD4 cells, a subset of T cells,…

Q: The immune system of a person is supressed. He was found positive for a pathogen in the diagnostic…

A: ELISA refers to the enzyme-linked immunosorbent assay. It is a plate-based assay technique and is…

Q: 16. Which cell type is derived from myeloid progenitors? A). Tc cell B). TH cell C). B cell D). Mast…

A: The development of blood cells starts with stem cells, which are unspecialized cells that can give…

Q: DiGeorge syndrome is the result of the absence or immaturity of the thymus gland at birth. This…

A: The immune system of the body consists of immune cells which is responsible for removing the foreign…

Q: What type of cells secrete antibodies? A) Cytotoxic T cells B) Helper T cells C) B cells…

A: Antibodies are  glycosylated protein molecules, also known as immunoglobulin. Antibodies are antigen…

Q: Which of the following is NOT true of Innate Lymphoid Cells (ILCs)? A) Each ILC type responds to a…

A: Innate lymphoid cells are immune cells that mirror the phenotype and function of T cells. It…

Q: The laboratory scientist who reviews the marrow reports that the bone marrow is overridden with…

A: Immunoglobulin play a critical role in the immune system by recognizing and binding to specific…

Q: Interferons are considered as ______ signals IL-2 is considered as ________ signals IL-1 is…

A: Signaling molecules are small molecules, ions, or even gas that can either cross the lipid bilayer…

Q: Which statement is incorrect regarding Type IV Hypersensitivity? O A) T-helper cells are activated…

A: Contact dermatitis takes place when the skin comes in contact with an allergen directly. It results…

Q: 89. A 65-year-old woman comes to the physician because of a 1-day history of a burning, tingling…

A: The CNS consists of the brain and the spinal cord, whereas the PNS consists of all the nerves that…

Q: An allergic reaction is an example of:

A: An allergic reaction is an example of:

Q: All of the following cells directly incorporate antigens into their structures, EXCEPT: A). Antigen…

A: The immune system is a defensive system in a host consisting of widely distributed cells, tissues,…

Q: SELECT ALL THAT APPLY ** Which of the following statements regarding the thymus is true? a) Its…

A: The thymus is an organ of the immune system that is larger and more active during infancy and early…

Q: The brain can sense cytokines released by peripheral immune cells through the following means EXCEPT…

A: Cytokines are small proteins produced by cells of the immune system in response to infection,…

Q: B-cell activation requires ____ b) antigens binding only c) antigen binding, antibody production,…

A: The immune system of the body play a major role in defending against the pathogenic invaders such as…

Q: An immunizatin reduces the chance that you will catch a severecase of disease because the…

A: Immunization is the process of developing immunity against the particular pathogen by the…

Q: Which of the following is not a function of interleukin 1?  a.) triggering the production and…

A: Interleukins are a type of cytokine that were originally thought to be produced only by white blood…

Q: Diffuse Large B-cell, Mantle cell and Follicular are all subtypes of which disease?   Question 2…

A: The question is asking to identify the disease that includes Diffuse Large B-cell, Mantle cell, and…

Q: Which is not applicable to innate immunity? A) O It is faster than adaptive immunity in responding…

A: Immune system is system which helps our body to fight against the foreign substances which will…

Q: 1. ___ , including mast cells, eosinophils, basophils, and ___ , respond to multiple extracellular…

A: When the immune system is weakened or compromised, it is less effective at protecting the body, and…

Q: Which lymphatic structure is impossible to palpate? A) axillary nodes B) inguinal nodes C) thymus D)…

A: We can say that The process of the human body that plays a crucial role in removing foreign…

Q: Which of the following determine what specific antigens B cells can recognize and bind? a) The type…

A: The immune cells are the defense cells that protect the body from invaders. The cells of the immune…

Q: 7. The major innate cell type to eliminate viral-infected cells are A). NK cells B). Neutrophils C).…

A: When the body is exposed to a dangerous foreign material, innate immunity arises as the body's…

Q: Interferons can slow down viral replication by inhibiting protein synthesis in in body cells. a.)…

A: Interferons This refers to the natural substance that are involved in helping the body's immune…

Q: Helper T cells: A) produce antibodies B) can act as memory cells C) initiate both the cell mediated…

A: The immune system protects an organism from diseases. The immune system detects the pathogen and…

Q: 13. Which of the following statements about interferons is correct? a) The local release of…

A: As per Bartlebby guidelines, an expert cannot answer more than one question at a time, kindly post…

Q: Signs of inflammation due to a local hyperemia are caused by b) heparin c) phagocyte mobilization d)…

A: Inflammation is define as a complex biological response created in the body in response to harmful…

Q: A 22 year old man develops diarrhea, enlarged lymph nodes, splenomegaly, hepatomegaly, and rash 45…

A: Bone marrow transplantation :  It is a special procedure by which the healthy blood- forming stem…

Q: Activated helper T Cells participate in which of the following processes? a.) Differentiation of…

A: Helper T cells or CD4+ T-cells are a type of T-cell that play an important role in the adaptive…

Q: you need a flu shot every year/season because (HA-haemoagglutinin; NA-neuroaminidase) A) the virus…

A: The viruses are constantly changing. So to keep yourself protected it is utmost important to get…

Q: Which lymphatic structure is impostor palpate? A) axillary nodes B) popliteal nodes C) inguinal…

A: The lymphatic system is essentially a drainage system that is associated with the venous system.…

Q: Which of the choices is required to activate a helper T cell, which in turn can stimulate antibody…

A: Major histocompatibility complex contains a set of polymorphic genes which codes for cell surface…

Q: John was bitten by a honey bee and within minutes there was an increase in blood to the site of the…

A: Anaphylaxis is a life-threatening allergic reaction.  This occurs within a minute or second when a…

Q: are substances that provoke a specific immune response which is so discriminating that only a single…

A: The human body has immune system that Clears foreign substances and fight against pathogens. There…

Q: Which is true of the innate immune response?   a)  Mucus can contain lysozyme and ampicillin   b)…

A: The innate immune system is the body's first line of defense against infection. It is made up of…

Defense Mechanism

Circumstances influence and compel people to behave in a certain way. One such behavior is a defense mechanism. It is employed by people to escape from unpleasant circumstances, thoughts and actions. Defense mechanisms are, thus, psychological strategies that help to avert and avoid unwanted feelings such as guilt or shame and situations such as threat and danger.