Ch 21, 22, 23, 24, 25, & 26 Flashcards
(202 cards)
The body has a defense mechanism, known as the ——, to fight off invasion by foreign substances.
Immune system
Foreign substances, called — (including a specific type of antigen called —), are recognized by the cells of the immune system and eventually destroyed.
-antigens
-allergens
Where can an antigen enter the body?
-through the skin
-the gastrointestinal tract
-the respiratory tract
When an antigen enters the body, it sets off an —— in which the immune system detects the antigen and produces —.
-immune response
-antibodies
— are proteins that search for the antigen, combine with it, and help to destroy it.
Antibodies
although most allergens are harmless and common to most individuals, they can cause an abnormal response by the immune system known as an ——.
Allergic reaction
A life threatening allergic reaction is known as an —— or —.
Anaphylactic reaction or anaphylaxis
What is the antibody called that is produced specifically to anaphylaxis?
Immunoglobulin E (IgE)
When the antibody immunoglobulin E is released due to anaphylaxis, this reaction can be referred to as ———.
IgE mediated anaphylactic reaction
What are the life threatening symptoms in an anaphylactic reaction?
-bronchoconstriction
-increased capillary permeability
-vasodilation
When a person is first exposed to a specific antigen, a condition known as — develops, which means that at some subsequent time, when the person is again exposed to that same antigen and IgE antibodies are present, an anaphylactic reaction can occur.
Hypersensitivity
This process of developing hypersensitivity on first exposure to an antigen is known as — and produces an IgE mediated anaphylactic reaction.
Sensitization
The primary chemical mediator released from mast cells and basophils is —.
Histamine
What does histamine cause?
-bronchoconstriction
-vasodilation
-increase in capillary permeability
When chemical mediators are released from the mast cells and basophils the first time the antigen is introduced into the body with no sensitization it is referred to as an —— or ———
-anaphalactoid reaction
-non IgE mediated reaction
what are the routes that an antigen can enter the body?
-injection (bites, stings, needles)
-ingestion (swallows the substance)
-inhalation (breathes substance in)
-contact (absorption through skin)
What is the most common medication that causes anaphylactic reactions?
Penicillin
What are some causes of anaphylactic reactions?
-Hymenoptera (insect bites)
-venom (bites, stings)
-foods
-pollen
-medications
-exercise (foods have been ingested close to time of exercise)
-weather conditions
-latex
Define malaise
Generalized feeling of weakness or discomfort
—- sound is caused by constriction and inflammation of the lining of the bronchioles.
Wheezing
What is the placement of a tube in the trachea to facilitate breathing called?
Endotracheal intubation
— are raised red blotches all over the skin
Hives
Hives are usually accompanied by ——
Severe itching
What are some early noticeable signs of anaphylaxis?
-rhinitis
-tachycardia
-itching
-hives
-edema