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The Immune System. The immune system defends against germs and microogransisms through a series of steps called the immune response. Through this response, the body recognizes and defends itself against bacteria, viruses, and other foreign substances harmful to the body.
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Antibody – Immunoglobulin protein, made by B-cells, that reacts only with the specific antigen that induced its formation
*An antigen matches an antibody much as a key matches a lock and whenever they match, the antibody destroys the antigen.
Immunoglobulin – serum protein synthesized by lymphocytes and plasma cells that has known antibody activity
- “The immune system’s army”
- An allergic reaction is the body’s way of responding to an invader
- An allergic reaction is the body’s overreaction to a harmless substance (an allergen)
-almost anything can trigger an allergic reaction-body senses antigen (trigger)-white blood cells and antibodies attack the antigen (response)-immunoglobulin E, or IgE.-an allergic reaction is an overreaction to the antigen- hypersensitivity
*negative feedback loop
-Antibody promotes production and release of chemicals and hormones called "mediators."
-lung conditions that affect breathing, such as chronic obstructive pulmonary disease-asthma-frequent infections of the nasal sinuses, ears, or respiratory tract -nasal polyps -sensitive skin
For relief of long-term allergies such as hay fever or reactions to dust or animal dander:
- Long-acting prescription antihistamines, such as cetirizine (Zyrtec), fexofenadine (Allegra), and loratadine (Claritin)
- Nasal corticosteroid sprays are widely prescribed for nasal symptoms not relieved by antihistamines.
Swollen & Sensitive Airways
Surrounding Muscles Tighten
◊ Not associated with allergic reactions
◊ Triggered by anxiety, stress, weather, exercise.. Etc.
◊ Regular Symptoms
◊ Triggered by allergic reactions
◊ Triggered by inhaled allergens: pollen, dander, etc.
◊ Regular Symptoms and more
Types Of Asthma
Leukotrienes & Histamines
• Antibodies in blood/body fluids identify a foreign object
• Antigens trigger response to destroy the invading microorganism
• Production of leukotrienes & pro- inflammatory response
• Muscle contractions and inflammations
• Range from minor to severe
• Can be life threatening
• Can be maintained
No Cure only Control
trying to avoid triggers, etc.