Any aspect of the immune system can be deficient.  Which of the following deficiencies would primarily affect the BARRIER function of immunity? Group of answer choices A. Complement Deficiencies, in which a variety of complement proteins do     not  function properly B. DiGeorge Syndrome, in which the thymus does not develop properly C. Selective IgA deficiency, in which IgA antibodies are produced in very low amounts D. Severe Combined Immune Deficiency (SCID), in which all T and B cell functions are absent

Q: They type of acquired immunity that results from the inoculation of immune serum is called: a.…

A: Inoculation is a type of immunization that involves introducing an infectious material onto an…

Q: Which of the following statements about innate lymphoid cells is true? (ONE ANSWER)   Require the…

A: Innate lymphoid cells (ILCs) are immune cells that lack a specific antigen receptor but can produce…

Q: Concerning the adaptive immunity, which of the following statements is CORRECT:  a. The adaptive…

A: The adaptive immune response does not occur very rapidly. Unlike the innate immune response, which…

Q: which of the following is true about the immune system? check all that apply. a. cd8 t cells…

A: Introduction The main function of the immune system is to protect us from foreign substances and…

Q: Which does NOT describe humoral immunity? Group of answer choices a. Antibodies are secreted by…

A: everyday we are exposed to large number of infectious agent post op however only a few of these…

Q: Which of the following statements is INCORRECT regarding memory B cells? a. Memory B cells express…

A: B cells are a part of adaptive immune response. B cells have B cell receptors (BCRs) on their…

Q: Which of the following is a critical feature ofimmediate hypersensitivity?a. inflammationb.…

A: Immediate hypersensitivity or type I hypersensitivity response is the binding of allergen-specific…

Q: The process of removing auto-reactive b and T cells during maturation is called: a. Clonal…

A: Clonal deletion is the removal through apoptosis of B cells and T cells that has expressed…

Q: Explain delayed type hypersensitivity (DTH). How might you expect to induce it? What components of…

A: The delayed type hypersensitivity (DTH) is characterized by the T cells recruitment into tissues to…

Q: The major inflammatory mediator released by degranulating mast cells in type I hypersensitivity is…

A: The body's defence mechanism against allergens, autoimmunity, and venom is hypersensitivity. Pollen,…

Q: interferons: a. cause inflammation b. inhibit viral infection c. aid in phagocytosis d. decrease…

A: Introduction: There are various methods by which chemical mediators can start an immune response.…

Q: Explain why each choice (a-d) is correct or incorrect.  A vaccine is effective because  a. The…

A: Vaccine contain weak or inactive parts of particular antigen that triggers an immune response…

Q: .

A: There are two types of the T cells based on the glycoprotein attached , these are CD4 cells and the…

Q: Which is/are not part of adaptive immunity?a. phagocytic cells e. antigen receptorsb.…

A: Adaptive immunity is a type of immunity that an organism gets after it has been exposed to an…

Q: A. vagina B. trachea and bronchi C. skin D. stomach E. mouth select A B C D E 1. villi pushing…

A: 1) vagina - low pH , antibodies and secretions  2) trachea and bronchi - villi pushing material…

Q: A patient has contracted an upper respiratory infection caused by a virus. Her initial adaptive…

A: Immunity is the body’s ability to resist and eliminate the potential harmful foreign invaders to…

Q: and T cells are activated by B cells are activated by a. soluble, intact antigens; antigen fragments…

A: 23. Option A is correct i.e, soluble, intact antigens; antigen fragments displayed on the surfaces…

Q: What produces Autoantibodies? Select one: a. Macrophages b. Memory T cells c. Plasma B cells d.…

A: Antibodies (immune proteins) that mistakenly target and react with a person's own tissues or organs…

Q: Which of the following does not occur during a secondary immuneresponse?a. Antibodies are made…

A: Secondary Immune Response: Secondary Immune Response is one of the important features in which the…

Q: Which ONE of the following flow cytometry results is most likely in a patient with chronic…

A: B cell chronic lymphocytic leukemia (CLL) develops from a type of white blood cell called B cells.…

Q: Match the antibody class to its correct description. Select the INCORRECT choice. a. IgE / the…

A: Immune system protects the body against foreign antigens and pathogens. Antibodies are proteins…

Q: Which of these is a valid example of an antigen and its corresponding epitope? Select one: a. An…

A: Antigen  is any substance that causes body's immune system to produce antibodies against it .

Q: 1. In central tolerance, 3 mechanisms deviate B cells away from making autoreactive antibody. Which…

A: These are multiple choice questions.

Q: Indicate to which branch(es) of the immune system the following statements apply, using H for the…

A: The human body may aim its defense against dangerous agents including bacteria, viruses, and poisons…

Q: Select all of the following statetments that apply to immunological memory:   A. A small…

A: Immunological memory refers to the immune system's capacity to react to infections more quickly and…

Q: 6. Match the example/scenario provided to the type of humoral immunity. a. active, naturally…

A: The ability of the body to fight back any infection in the body comes from its immune system. The…

Q: Two of the major actions of complement are a. increased inflammatory response and cytolysis. b.…

A: The complement system gets activated when it comes in contact with the antibody molecule that is…

Q: The primary role of complement control proteins that operate in the early stages of complement…

A: In response to antigenic stimulation, antibodies are produced which are immunoglobulins. The…

Q: 1. Can create antibodies 2. Can destroy pathogens by secreting perforins 3. Is activated by a…

A: The humoral immune system deals with antigens from pathogens that are freely circulating, or outside…

Q: What are the roles of the innate immune system? Select all that apply.   A. identity self vs.…

A: Pathogens are disease-causing organisms that can cause humans to become ill or die depending on the…

Q: During allergic sensitization, which of the following statements are FALSE? A. Allergen exposure…

A: If the foreign substance after entering the body is capable of inducing allergic reaction then the…

Q: During the secondary immune response, in the serum you would expect a. to find a greater…

A: Introduction The secondary immune response occurs on repeated antigen exposures, with a stronger…

Q: In what process is tumor necrosis factor (TNF) not involved?a. chemotaxis of phagocytesb. fever c.…

A: Tumor necrosis factor (TNF) is produced by macrophages, lymphocytes, and other immune cells as an…

Q: All of the following are true in reference to T- cell priming except a. it occurs in primary…

A: The immune system of the human body consists of white blood cells, antibodies, spleen, thymus, and…

Q: How may B cells be activated? Select all that apply. Select one or more: a. Crosslinking of BCRS and…

A: How may B cells be activated?

Q: A(n) _____ is an inactive form of an enzyme that frequently participates in a cascade of enzymatic…

A: An enzyme is a catalytic molecule that increases the rate of a reaction without getting used up in…

Q: A 55-year-old male was diagnosed with rheumatoid arthritis (RA) after experiencing complications…

A: Introduction Rheumatoid arthritis (RA) is a long-term autoimmune condition that mostly affects the…

Q: A deficiency of both B cells and T cells is most likely a(n). a. secondary immunodeficiency b.…

A: Immunodeficiency is defined as the host's inability to defend against invading pathogens due to a…

Q: Type I (immediate) hypersensitivity A. is mediated by IgE B. is mediated by T lymphocytes…

A: Hypersensitivity refers to undesirable reactions produced by the normal immune system including…

Q: A naive T cell is migrating from the blood into a lymph node and first rolls along high endothelial…

A: T-lymphocytes are produced from the bone marrow and maturated in the thymus. They express T-cell…

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.