CH 14

Any heightened or inappropriate immune response resulting in tissue damage is called a/an

• autoimmune disease

• desensitization

• hypersensitivity

• immunodeficiency

Once a mother has been sensitized to the Rh factor

• all other Rh+ fetuses are at risk

• she can be given RhoGAM in future pregnancies to prevent hemolytic disease of the newborn

• only future Rh- fetuses are at risk

• she can never again have a low risk pregnancy

The initial encounter with an allergen is called the

• provocative dose

• desensitizing dose

• sensitizing dose

• hypersensitivity dose

Which event is the process of releasing chemical mediators

• binding of IgE by the Fc region to mast cells and basophils

• bonding of allergen to adjacent IgE binding sites on mast cells and basophils

• degranulation

• histamine acts on smooth muscles

In multiple sclerosis, autoantibodies attack

• acetylcholine receptors on skeletal muscle

• acetylcholine receptors on smooth muscle

• myelin sheath cells of the nervous system

• sodium pump proteins in the cell membrane

The potential for hemolytic disease of the newborn occurs when

• fetal Rh+ cells enter an Rh+ mother

• maternal Rh+ cells enter an Rh- fetus

• fetal Rh+ cells enter an Rh- mother

• maternal Rh- cells enter an Rh+ fetus

Fungal spores and animal dander are considered to be which type of allergen

• ingestant

• inhalant

• injectant

• contactant

Histamine causes all of the following except

• constriction of smooth muscle of bronchi and intestine

• increased sensitivity to pain

• relaxes vascular smooth muscle

• pruritus and headache

Autoantibodies cause tissue injury in all of the following diseases except

• Graves' disease

• myasthenia gravis

• tuberculin reaction

• multiple sclerosis

A seasonal reaction to inhaled allergens is

• eczema

• asthma

• anaphylaxis

• allergic rhinitis