ANATOMY

Detailed explanation-1: -The anaphylactic response is mediated by IgE antibodies that are produced by the immune system in response to environmental proteins (allergens) such as pollens, animal danders, or dust mites.

Detailed explanation-2: -What is the term for a strong response to a harmless antigen in the environment?-An allergy. • Reactions to allergens release histamines which cause non-specific responses such as inflammation. White blood cells are an important part of the human immune response.

Detailed explanation-3: -Definition. A hypersensitivity reaction is an extreme or unnecessary immune response that the body has to an antigen.

Detailed explanation-4: -Antigens that can induce an allergic response are called allergens, and they are often derived from non-infectious or non-microbial sources.

Detailed explanation-5: -When a harmless substance such as dust, mold, or pollen is encountered by a person who is allergic to that substance, the immune system may over react by producing antibodies that “attack” the allergen. The can cause wheezing, itching, runny nose, watery or itchy eyes, and other symptoms.