An essential element of all allergy reactions is the
a. Release of interferons from tissue cells.
b. Accumulation of ige on the surfaces of mast cells and basophils.
c. Passage of igg from the immune system to local tissue cells.
d. Elimination of all traces of plasma cells from the body.

1 Answer

Answer :

b. Accumulation of ige on the surfaces of mast cells and basophils.

Related questions

Description : Allergy is immediate hypersensitivity mediated by _____and mast cell degranulation a) IgG b) IgE c) IgM d) IgA e) IgD

Last Answer : Ans: B

Description : IgE has a tendency to attach to (A) Basophils (B) Mast cells (C) Both (A) and (B) (D) None of these

Last Answer : Answer : C

Description : What type of immune cell may control IgE-mediated hypersensitivities? a. Suppressor T cells b. Plasma cells c. Cytotoxic T cells d. Neutrophils

Last Answer : a. Suppressor T cells

Description : Cancer cells interfere with cell functions in all the following ways except: a. they rob cells of their nutrients and induce cell starvation. b. they stimulate the immune system to produce destructive ... reduce the oxygen supply to cells. d. they overwhelm cells through sheer force of numbers.

Last Answer : b. they stimulate the immune system to produce destructive interferons.

Description : Cromolyn has as its major action (a) Block of calcium channels in lymphocytes (b) Block of mediator release from mast cells (c) Block of phosphodiesterase in mast cells and basophils (d) Smooth muscle relaxation in the bronchi (e) Stimulation of cortisol release by the adrenals

Last Answer : Ans: B

Description : The colostrum, or first milk of a nursing mother, contains _____ that is transferred to the nursing child. a. IgA b. IgG c. IgM d. IgE

Last Answer : a. IgA

Description : The _____ class of antibodies is the principal component of a secondary antibody response. a. IgM b. IgD c. IgG d. IgE

Last Answer : c. IgG

Description : Resistance to disease in the passageways of the respiratory and gastrointestinal tract is dependent on antibodies in the class _____. a. IgG b. IgA c. IgE d. IgM

Last Answer : b. IgA

Description : This dimeric antibody class often occurs in secretions of the respiratory and gastrointestinal tracts. a. IgE b. IgM c. IgA. d. IgG

Last Answer : c. IgA.

Description : Which of the following mediates Type I hypersensitivity reaction? A- IgE B- IgG C- IgM D- IgD

Last Answer : IgE

Description : Of the five classes of antibodies,_____ and_____ are primary disease fighters, while secretory _____ is found on body (mucosal) surfaces. a. IgA, IgG, IgD b. IgG, IgA, IgM c. IgG, IgD, IgM d. IgG, IgM, IgA

Last Answer : d. IgG, IgM, IgA

Description : In allergic diseases, the concentration of the following is increased in plasma: (A) IgA (B) IgG (C) IgD (D) IgE

Last Answer : Answer : D

Description : Which one of the following is true of IgE? 1) Is present in plasma in the same concentration as IgG 2) Is increased acutely in an asthmatic attack 3) Crosses the normal placenta 4) Is increased in the serum of atopic individuals 5) Is involved in type 2 hypersensitivity

Last Answer : Answers-4 IgG is the predominant form of immunoglobulin in plasma at a concentration around 10,000 times that of IgE. IgG crosses the placenta to confer immunity to the fetus but IgE does ... frequently increased in those with atopy but serum IgE does not rise acutely during an asthmatic attack.

Description : Allergic reactions are mediated by (A) IgA (B) IgG (C) IgD (D) IgE

Last Answer : Answer : D

Description : Assertion . Mast cells in human body release excessive amount of inflammatory chemicals which cause allergic reactions. Reason . Allergens in the envi

Last Answer : Assertion . Mast cells in human body release excessive amount of inflammatory chemicals which cause ... If both the assertion and reason are false

Description : The major histocompatibility complex of antigens may be found a. On the surface of body cells. b. Only on cells sensitized during allergy reactions. c. Only on cells involved in a xenograft. d. On cells stimulated by the urushiol in poison ivy plants.

Last Answer : a. On the surface of body cells.

Description : Match the following columns and select the correct option. Column-I Column - II (A) Eosinophils (i) Immune response (B) Basophils (ii) Phagocytosis (C) Neutrophils (iii) Release histaminase, destructive enzymes (D) Lymphocytes (iv) ... (iii) (c) (i) (ii) (iv) (iii) (d) (ii) (i) (iii) (iv)

Last Answer : (a) (iii) (iv) (ii) (i)

Description : In the body's immune system, _____ are the major producers of secreted antibodies. a. macrophages b. plasma cells c. T cells d. B cells

Last Answer : b. plasma cells

Description : Histamine is synthesised in (A) Brain (B) Mast cells (C) Basophils (D) All of these

Last Answer : Answer : D

Description : What is the reaction-taking place when H2 receptor binds to mast cells and basophils ?

Last Answer : When H2 binds to mast cells and basophils it suppresses degranulation.

Description : Type I ADR reactions is___________ a) Caused when T-cells bind to a specific antigen b) Caused by tissue injury c) IgE mediated d) Caused by cytotoxic antibodies

Last Answer : c) IgE mediated 

Description : The symptoms of allergen-mediated asthma result from which of the following? (a) Increased release of mediators from mast cells (b) Increased adrenergic responsiveness of the airways (c) ... bronchial tissue (d) Decreased calcium influx into the mast cell (e) Decreased prostaglandin production

Last Answer : Ans: A

Description : The Symptoms of allergen-mediated asthma result from which of the following? (a) Increased release of mediators from mast cells (b) Increased adrenergic responsiveness of the airways (c) ... bronchial tissue (d) Decreased calcium influx into the mast cells (e) Decreased prostaglandin production

Last Answer : Ans: A

Description : Proteins formed when cells are exposed to viral or foreign agents that are capable of activating other components of the immune system are referred to as a) interferons. Interferons are biologic ... series of enzymatic proteins in the serum that, when activated, destroy bacteria and other cells.

Last Answer : a) interferons. Interferons are biologic response modifiers with nonspecific viricidal proteins.

Description : Select the incorrect statement. (a) Inbreeding helps in accumulation of superior genes and elimination of undesirable genes. (b) Inbreeding increases homozygosity. (c) Inbreeding is essential to ... any animal. (d) Inbreeding selects harmful recessive gene that reduce fertility and productivity.

Last Answer : (d) Inbreeding selects harmful recessive gene that reduce fertility and productivity.

Description : Natural killer (NK) cells kill by secreting a. Lysozymes. b. Granzymes. c. Defensins. d. Interferons.

Last Answer : b. Granzymes.

Description : Which of the following is NOT a lymphocyte? a. B-cells b. T-cell c. NK cells d. Basophils

Last Answer : d. Basophils

Description : Which pair of cells represents granulocytes? a. Basophils and lymphocytes b. Neutrophils and eosinophils c. Eosinophils and monocytes d. Lymphocytes and monocytes

Last Answer : b. Neutrophils and eosinophils

Description : why IgM and IgE are longer than IgG , IgD and IgA?

Last Answer : Immunoglobulin G (IgG), the most abundant type of antibody, is found in all body fluids and protects against bacterial and viral infections. Immunoglobulin M (IgM), which is found mainly in the blood and lymph fluid, is the first antibody to be made by the body to fight a new infection.

Description : Reaginic antibody is (A) IgA (B) IgG (C) IgD (D) IgE

Last Answer : Answer : D

Description : On exposure to any antigen, the first antibody to be formed is of the following class: (A) IgA (B) IgG (C) IgM (D) IgE

Last Answer : Answer : C

Description : The immunoglobulin having the longest half-life is (A) IgA (B) IgG (C) IgM (D) IgE

Last Answer : Answer : B

Description : An immunoglobulin found in exocrine secretions is (A) IgA (B) IgG (C) IgM (D) IgE

Last Answer : Answer : A

Description : Which AB is responsible for atopy? A. IgA B. IgE C. IgG D. IgW

Last Answer : Ans: B

Description : Which of the following classes of immunoglobulins is important in immunity to T. vaginalis? A A. IgA B. IgG C. IgE D. IgM

Last Answer : IgA

Description : 14.The immunoglobulin present in colostrum is (a) IgE (b) IgM (c) IgG (d) IgA

Last Answer : (b) IgM

Description : Which is the only immunoglobulin that can cross the placenta? a. IgA b. IgD c. IgE d. IgG

Last Answer : d. IgG

Description : Asthma may be attributed to (a) inflammation of the trachea (b) accumulation of fluid in the lungs (c) bacterial infection of the lungs (d) allergic reaction of the mast cells in the lungs.

Last Answer : (d) allergic reaction of the mast cells in the lungs.

Description : Accumulation of crystalline depositions in articular surfaces, bones, soft tissue, and cartilage is referred to as a) tophi. Tophi, when problematic, are surgically excised. b) subchondral bone. Subchondral ... refers to the escape of fluid from the blood vessels or lymphatics into the joint cavity.

Last Answer : a) tophi. Tophi, when problematic, are surgically excised.

Description : ________ bind to_________ on microbial invaders. a. Toll-like receptors; PAM Ps b. Mast cells; histamine c. Toll-like receptors; complement d. Macrophages; defensins

Last Answer : a. Toll-like receptors; PAM Ps

Description : The unique sets of proteins that present antigens on the surfaces of body cells are a. MHC proteins. b. Cytokines. c. Complement proteins. d. Immunoglobulins.

Last Answer : b. Cytokines.

Description : .Bacteria having no flagella are unable to A- move B- reproduce C- stick to tissue surfaces D- grow in nutrient agar

Last Answer : move

Description : Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin? (a) Eosinophils (b) Monocytes (c) Neutrophils (d) Basophils

Last Answer : d) Basophils

Description : Cell-mediated immunity is the function of (A) B lymphocytes (B) T lymphocytes (C) Plasma cells (D) Basophils

Last Answer : Answer : B

Description : Which of the following terms refers to a form of white blood cell involved in immune response? a) Lymphocyte Both B and T lymphocytes respond to exposure to antigens. b) Granulocyte Granulocytes ... blood cell without central pallor, seen with hemolysis. d) Thrombocyte A thombocyte is a platelet.

Last Answer : a) Lymphocyte Both B and T lymphocytes respond to exposure to antigens.

Description : Which of the following is NOT a granulocyte? a. Neutrophils b. Monocytes c. Eosinophils d. Basophils

Last Answer : b. Monocytes

Description : Large parasites such as helminthes may be killed extracellularly by the action of A- basophils B- monocytes C- eosinophils D- neutrophils

Last Answer : eosinophils