Utah Esthetician State Board Practice Exam

What role does histamine play in the body?

1. Inhibits the immune response

2. Triggers the inflammatory response

3. Regulates blood pressure

4. Promotes healing of wounds

The correct answer is: Triggers the inflammatory response

Histamine plays a crucial role in the body by acting as a chemical messenger that is primarily involved in the immune response and inflammatory processes. When the body encounters a potential threat, such as allergens or pathogens, histamine is released from certain cells, like mast cells, as part of the immune reaction. This release leads to various physiological changes, such as the dilation of blood vessels and increased permeability of capillaries, which allows immune cells to access the affected areas more easily. This is a vital part of the inflammatory response, helping the body to fight infections, heal injuries, and react to allergens. While histamine does not inhibit the immune response, regulate blood pressure, or directly promote wound healing, its release is essential for the body to mount a proper defense against irritants and pathogens. Understanding the role of histamine is important for estheticians, especially when dealing with clients who may have allergic reactions or inflammatory skin conditions.