1. Match the hypersensitivity reaction with the cause. Type II Type I Type III Type IV A. Sensitized Ag binding to IgE whose Fc region has bound to mast cells B. Small molecules binding to human cells producing structures that look foreign C. Effector T cells specific for sensitized Ag D. IgG bound to small immune complexes formed from soluble proteins 2. Match the drug with their actions. Corticosteroids Epinephrine Antihistamines Cromolynsodium A. Suppresses leukocyte function B. Prevents degranulation of activated mast cells C. Reforms tight junctions D. Prevents histamine from binding H1

Q: 11. Your patient has an anaphylactic reaction (adverse reaction) in his stomach a week (time frame…

A: Note : Hi. Thanks for your questions. Since, you have posted multiple questions, as per our…

Q: 21. The following is correct about superantigens? A. cause autoimmune disease C. activates B cells…

A: Introduction :- Superantigens (SAgs) are a group of antigens that cause the immune system to become…

Q: vaccination provides natural passive immunity A. True B. False 1e. Lymph nodes have several…

A: Answer 1a Toxoids and vaccine function similarly  True this statement is correct.  Answer 1b Active…

Q: 3. Protease inhibitors, O inhibit processing of long polypeptide chains O inhibit reverse…

A: Introduction A substance that increase the rate of a reaction or catalyze a reaction without being…

Q: Helper T cells that have been activated   a Can activate macrophages b Can stimulate cytotoxic T…

A: The major histocompatibility complex, abbreviated as MHC, is a set or group of glycoproteins that…

Q: 90. Put the events of initial allergen sensitization in order. APC ingests, [Choose ] v digests, and…

A: First : Plasma cells produce IgE against allergen. Second : IgE attach to mast cells. Third: APC…

Q: There are different pathways by which B - cells can be activated, one of them is CD4 T - cells…

A: B cells are at the heart of the adaptive humoral immune system, mediating the development of…

Q: 22. Immune tolerance occurs mainly to a. NK-cells and B-cells b. NK-cells and T-cells c. B-cells and…

A: KEY WORDS :- Immune tolerance -is a condition in which the immune system does not respond to…

Q: 1. usually, what type of molecules are present in the peripheral SMAC? 2. usually, what type of cell…

A: ANSWER;- 1. In the center is the central supramolecular initiation complex or cSMAC, which contains…

Q: All of the following have been observed in individuals deficient in either CD3δ or CD3ε except a.…

A: Answer: Introduction: CD3 means a cluster of differentiation is a complex of proteins and T- cell…

Q: Corticosteroids work by doing which of the following? f6 Multiple Choice Reduce the number of T- and…

A: Corticosteroids have immense functions. They have variety of actions on body.

Q: Mutations occurring in B cells within the germinal center:

A: Germinal centers are sites within secondary lymphoid organs (lymph nodes and spleen)  -…

Q: 29. T-cell dependent antigens can a. directly stimulate B cells to multiply and produce antibodies…

A: The correct answer is (c) restrict antibody formation. T-cell dependent antigens require the help of…

Q: Your patient is experiencing peripheral edema because of inflammation. A) Name the four signs of…

A: Question 6: A)Four cardinal signs of inflammation: heat, pain, redness, and swelling

Q: 107. Put the events of a type I hypersensitivity reaction in order. allergen attaches to IgE…

A: Adaptive Immune reaction is the type of host defense mechanism that protects the host from…

Q: appropriate symptoms.                                                  Urticaria…

A: Urticaria                     :  Activation of mast cells on the skin. An Angioedema         :…

Q: Type II hypersensitivity reaction                                                  Type III…

A: Type IV hypersensitivity- Effector T cells specific for the sensitizing Ag Type II hypersensitivity…

Q: Antigens that trigger hypersensitivity reactions are actually called allergens exogenous antigens .…

A: Hypersensitivity responses happen when the regularly defensive immune framework reacts unusually,…

Q: Match each term in Column I with its correct description in Column II. COLUMN I COLUMN II 1. natural…

A: Immunity can be defined as body’s ability to fight against a disease-causing agent which is termed…

Q: 87. A 24-year-old woman is brought to the emergency because of a 1-day history of fever and diffuse…

A: Allergic reactions are the response of our immune system toward substances called allergens when…

Q: 6. Proteins that are secreted by cells of the innate and adaptive immune response, and help to…

A: Immunity is the capability of an organism to recognize and tolerate or reject the foreign objects…

Q: Type II hypersensitivities are due toa. IgE reacting with mast cellsb. activation of cytotoxic T…

A: Normal immune system produces undesirable reactions such as allergies and autoimmunity and this is…

Q: Immature B cells specific for monovalent self antigens encountered in the bone marrow a. enter a…

A: Immunity can be defined as the ability of an organism to fight against infections caused by a…

Q: 91. Put the events of a type I hypersensitivity reaction in order. allergen attaches to IgE…

A: The  events of a type I hypersensitivity reactions in order is; First -> allergen attsches to IgE…

Q: The indirect reason for the appearance of skin lesions due to a Type IV hypersensitivity is Tc cells…

A: Hypersensitivity  Hypersensitivity or hypersensitive reactions are intolerance type reactions which…

Q: Match the term in Column A with its correct description in Column B.

A: Negative selection destroys thymocytes with a great affinity for self-peptides or MHC. This…

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: Which hypersensitivities are T-cell mediated?a. type I b. type II c. type IIId. type IV

A: Hypersensitivity is also called intolerance, or hypersensitivity reaction. Hypersensitivity is an…

Q: Describe the importance of T-cells for good health. Key terms: MHC, activation, apoptosis,…

A: T-cells are a type of white blood cells. They are part of the immune system and develop from stem…

Q: Which of the following could be an effect of type III hypersensitivity? Select one: a. All of these…

A: Hypersensitivity reaction is a condition in which the immune system's ordinarily protective function…

Q: ttack complex by the association of C9 protein subunits.

A: It is an enhancement of immune response. It plays an important role in innate and adaptive immunity.…

Q: Molecular mechanisms of T-cell central tolerance.

A: T-cells These cells are vital types of white blood cells of the immune system and develop from the…

Q: 3. Helper T cells can be activated by I. interacting with an infected cell expressing an antigen-MHC…

A: Introduction Antigen-presenting white blood cells (WBC), such as macrophages (a large phagocytic…

Q: The following statement regarding Type I hypersensitivity reaction is FALSE: * prostaglandins,…

A: The false statements regarding Type I hypersensitivity reaction is:- The initial response is…

Q: 15. Interleukine 12 (adaptive immune cytokine) inducedifferentiation of B-cells False True

A: The immune system acts as a defense system and is responsible for protecting the body from…

Q: 13. As a response to viral-infected cells, the following cell gets activated? A. TH1 B. TH2 C. TH3…

A: Introduction  A host is required for the growth of viruses, which are microscopic infectious…

Q: Match each type of immunity in the left column with its associated example from the right column.…

A: Introduction Immunity can either be active or passive. Antibodies produced in another person or…

Q: 1. Which one of the following is NOT associated with type IV hypersensitivity reaction? Select one:…

A: Type IV Hypersensitivity reaction (also known as delayed onset HS) is a cell mediated reaction that…

Q: Which of the following TWO are true about gamma:delta T cells? [PLEASE CHOOSE TWO ANSWERS] They…

A: In contrast to alpha: beta T cells, gamma: delta T cells have a T-cell receptor composed of a gamma…

Q: Match the hypersensitivity to the example, each type can be used more than once or not at all. ✓ Hay…

A: Hypersensitivity is the reaction of the immune system to certain substances resulting in allergic…

Q: What is true of a person with ty O They could produce anti-O antib TI

A: Introduction: As we know The blood is comprised of the fluid portion and the cellular portion in…

Q: phagocytes?

A: Phagocytes: Phagocytes are a type of immune cells which surround and kill microorganisms. They…

Q: A B cells B. Peri-arteriolar lymphoid sheath e. Antigen-presenting cells, e.g., macrophages D.…

A: 17.Answer--- correct option is D        Vascular sinus

Q: When encountering antigen, describe the mechanism of antigen presentation by B cells.

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

Immune Disorders

The collaboration between the cells and proteins that work together as a defense system against infection comprises the immune system.Each of them performs a variety of tasks to recognize and/or react against a foreign body.