What Occurs in an Allergic Reaction When Histamine Binds to Receptors

question 8

Multiple Choice

What occurs in an allergic reaction when histamine binds to receptors on sensory nerve endings?

• A) Sodium channels are activated, causing pain and swelling.
• B) Itch-specific fibers are stimulated, causing itching and pain.
• C) Vasodilation in the area causes erythema.
• D) Vasodilation in the area causes histaminic cephalgia.

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