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: Which of the following is NOT a component of the human body's second line of defense against…

A: INTRODUCTION Defense mechanism of human body Defense mechanism has three lines including physical…

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) Which line of defense are these immune response components part of? A) Complement: B)…

A: Immune system helps in protection of organism against disease.Immune system helps in detection and…

Q: 3. A 28-year-old man has the rash shown on his elbows and knees. Abnormal proliferation of which of…

A: Infection is basically entry , establishment and multiplication of disease causing agent inside the…

Q: Several different subsets of innate lymphoid cells exist, and each is specialized to respond to a…

A: Lymphoid Cells  Lymphatic tissue is a connective tissue consisting of different types of lymphoid…

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: 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: The grouping of blood is based on substances called: A) antibodies B) antigens C) antitoxin D)…

A: Amswer is b.) Antigen.

Q: What is the defective immune response characteristic of AIDS?

A: Introduction   Viral infections are very harmful for mankind. In the post century where we faced the…

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 human immune system includes a number of specialized cells. Suggest the activity of the…

A: A collection of tissues, chemicals, and cells called the immune system works to protect the body…

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: 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: 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: Both antibodies and particular complement proteins, such as c3b, are capable of aiding phagocytes in…

A: Bacteria are a kind of organic cell. They comprise a huge space of prokaryotic microorganisms.…

Q: ) O dendritic cells: works with adaptive immune system as an antigen presenting cell

A: Answer is D : Dendritic cells : Works with adaptive immune system as an antigen presenting cell .

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: ____________ are suspensions of killed or live germs which is employed to induce the production of…

A: Among the given options, option (a) is the most appropriate.It explains that the vaccines are…

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: Vascular fluid: A) Is 20% of extracellular fluid B) Is regulated by growth hormone C) Is 60% of…

A: The vascular system consists of the blood vessels and the lymph vessels. The blood vessels are of…

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: B cell-receptors differ from T cell-receptors in that ________.   A) B cell-receptors are…

A: B cells & T cells are two types of lymphocytes involved in the adaptive immune response. Both of…

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: 1. How does the body differentiate between self and non-self antigens? (1) 2. On which cells do we…

A: Note- We are supposed to answer three subparts of a question.  Please repost the other questions…

Q: The volume of air that can be forcefully exhaled after a maximal inhalation is the 田 A) Tidal Volume…

A: “Since you have asked multiple questions, we will solve the first question for you. If you Want any…

Q: 28. A 62-year-old man has adenocarcinoma with lymph node metastases in the proximal portion of the…

A: Introduction Cancer is caused due to uncontrolled and abnormal division of the cells of the body.…

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: Which of the following are important for viral protection? ( select all the correct answers)    a)…

A: The immune system checks the body for infections or problem-causing chemicals and fights any 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: 5. A 65-year-old woman comes to the physician because of a 1-day history of a burning, tingling rash…

A: The right breast is divided by nerve supply to the different parts of the breast tissue.

Q: 3. Increased vascular permeability leads to which of the following cardinal signs of inflammation?…

A: B) EdemaExplanation:The increased vascular permeability that occurs as a result of the inflammatory…

Q: The nurse is providing teaching after an adult receives a booster immunization. Which adverse…

A: Vaccines Vaccines help to develop cell mediated immunity and humoral immunity. Immunization is the…

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: In a normal individual, a T cell that interacts with a self-antigen in the thymus will more than…

A: Introduction  Immunity is the property or ability of the body to defend against the pathogens.…

Q: (69) A 22 year old man develops diarrhea, enlarged lyph nodes, splenomegaly, hepatomegaly, and a…

A: Usually transplant rejection occurs when the recipient immune system attacks the transplanted organ…

Q: 19) Which of the following is correct, in result from kinins and histamines being released in…

A: Kinins and histamines are released from the mast cells in response to tissue damage.  They induce…

Q: Which of the following destroys virus-infected cells?   Question 6 options:   A)  cytotoxic T…

A: The immunity is both cell-mediated as well as humoral or antibody-mediated. There are lymphocytes…

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.