Which of the following occurs after tissues are injured as part of the cell signaling response?

• A. Suppression of all cellular communication
• B. Inhibition of blood flow to the injured area
• C. Release of signaling molecules such as cytokines
• D. Immediate cell division without any signaling

Answer: (C)

Verified step by step guidance

1. Understand the context of the problem: The question is asking about the cell signaling response that occurs after tissues are injured. This involves understanding how cells communicate to initiate healing and repair processes.
2. Recall the basics of cell signaling: When tissues are injured, cells release signaling molecules to coordinate a response. These molecules include cytokines, which are small proteins that mediate and regulate immunity, inflammation, and hematopoiesis.
3. Analyze the options provided: Suppression of all cellular communication is incorrect because signaling is essential for the healing process. Inhibition of blood flow is also incorrect, as increased blood flow is typically needed to deliver immune cells and nutrients to the injured area. Immediate cell division without signaling is incorrect because cell division is regulated by signaling molecules.
4. Focus on the correct answer: The release of signaling molecules such as cytokines is the correct response. Cytokines act as messengers to recruit immune cells, promote inflammation, and initiate tissue repair.
5. Summarize the process: After tissue injury, signaling molecules like cytokines are released to coordinate the healing response. This involves recruiting immune cells, increasing blood flow, and regulating cell division to repair the damaged tissue.