Question

28 when a chemical messenger helps initiate an inflammatory response by causing cellular changes in neighboring cells, it is demonstrating ______ signalling. multiple choice pheromone autocrine paracrine

Explanation:

To solve this, we analyze each option:

• Pheromones are for inter - species or inter - individual communication (often in a non - inflammatory, behavioral context), so not relevant here.
• Autocrine signaling is when a cell signals to itself, but the question is about neighboring cells.
• Paracrine signaling involves a cell releasing a signal that acts on neighboring cells. In inflammation, chemical messengers (like cytokines) often use paracrine signaling to affect nearby cells and initiate the inflammatory response.

Answer:

The correct option is the one labeled "paracrine" (the third radio button option with the text "paracrine").