Final answer:
The symptoms related to histamine release in an allergic reaction are vasodilation and increased gastric secretion, including tachycardia. Primary allergic symptoms include swelling, itching, and bronchoconstriction.
Step-by-step explanation:
The symptoms related to histamine release in a patient exhibiting an allergic reaction are vasodilation and increased mucus secretion, among others. Two specific symptoms from the provided options are:
- Increase in gastric secretion - While not mentioned as a primary symptom in the question, histamine can stimulate the secretion of gastric acid in the stomach.
- Tachycardia - Histamine release can cause an increase in heart rate as part of the systemic response to the allergen.
However, it should be noted that increased gastric secretion is generally more associated with the physiological role of histamine in digestion than with allergy responses. The primary allergic symptoms are due to increased vascular permeability and vasodilation, which can lead to hives, swelling, itching, and redness, as well as bronchoconstriction that results in asthma-like symptoms.
Histamine is a chemical mediator released by mast cells during an allergic reaction. It causes blood vessels to become more permeable, leading to swelling and redness. It also stimulates the heart, resulting in increased heart rate and potentially tachycardia.
the correct option is C. Tachycardia