If an Allergic Reaction Occurs Days After Exposure to an Allergen

question 21

Multiple Choice

If an allergic reaction occurs days after exposure to an allergen, then the allergic response is mediated by the ____ system.

• A) hormonal
• B) cell-mediated
• C) autonomic
• D) humoral

---

Definitions:

Immunoglobulin

A group of proteins known as antibodies produced by the immune system to fight against pathogens and foreign substances.

Hemolysis

The rupture or destruction of red blood cells, leading to the release of hemoglobin into the surrounding fluid.

Embolus

An embolism occurs when a foreign body like a blood clot, air bubble, fatty particles, or any other substance is transported by the bloodstream and becomes lodged in a vessel, blocking it.

Allergy

An immune system reaction to a foreign substance (allergen) that is not typically harmful to the body.