Question

the release of histamine by mast cells at an injury site produces which of the following responses? select all that apply shivering, redness, swelling, warmth

Explanation:

Histamine release from mast cells during inflammation causes vasodilation (leading to redness and warmth) and increased vascular permeability (leading to swelling). Shivering is related to thermoregulation, not histamine - mediated inflammation. So redness, swelling, and warmth are correct responses.

Answer:

B. Redness, C. Swelling, D. Warmth