Question

what cell is activated in response to an injury to connective tissue that stimulates the inflammatory response?
○ mast cell
○ histamine
○ bacteria
○ phagocytes

Explanation:

To solve this, we analyze each option:

• Mast cells are found in connective tissue and release histamine (a chemical) when injured, triggering the inflammatory response.
• Histamine is a chemical (not a cell), so it's incorrect.
• Bacteria are pathogens, not cells activated by connective tissue injury for inflammation.
• Phagocytes (like macrophages) are involved in cleaning up, not the initial activation of the inflammatory response from connective tissue injury.

Answer:

A. mast cell