1. Allergies Upload 14.11 Allergic reactions *Watch Discovery Channel "Allergic Reaction"

2. 1.A wasp Phoebe has never encountered stings her and releases its venom. 2.Phoebe’s mast cells release ( histamine / antihistamine ). 3.Blood vessels dilate, flooding the interstitial spaces with (antigens/antibodies ). 4.Phoebe has no antibodies to the venom so her body will make antibodies from (scratch / a vaccine ). 5.Sometimes, and in this case, the body makes the wrong antibodies. The wrong antibodies are called ( IgA antibodies / IgE antibodies ). These antibodies are meant to attack large parasites. 6.When IgE antibodies kick in, an ( allergic / fight or flight ) reaction kicks in that is designed to blow away large parasites. 7.Phoebe’s body is now allergic to the wasp venom. When she is stung a second time her mast cells are 1000x more sensitive. Her allergic response is known as ( anaphylactic / toxic ) shock. 8.The treatment is ( adrenalin / Tylenol ).

3. More info Definition: Allergy- An immune attack against a non- harmful substance

4. Two types of allergies Delayed-reaction allergy Can affect anyone Causes include include organ transplants, poison ivy, pathogens, food Can result in rejection of an organ or rash Immediate allergic reaction Occur in people who produce IgE antibodies (inherited) Causes include food, insect bites, environmental allergens May result in anaphylactic shock and asthma

5. Symptoms of allergies -dilation of blood vessels -swollen tissue -contraction of bronchial tubes -increase mucus production­