What takes place during the proliferative phase of tissue healing?

• A. Wound cleaning and sealing
• B. Formation of granulation tissue
• C. Resolution and repair
• D. Vasoconstriction occurs

Answer: (B)

During the proliferative phase of tissue healing, the primary focus is on the formation of granulation tissue. This phase occurs following the initial inflammatory response, and it is characterized by several crucial processes. Granulation tissue is formed from a combination of new connective tissue and microvascular networks, which provide a framework for new tissue formation. This tissue is rich in collagen and proteins, which are essential for the stabilization and integrity of the healing site.

In addition to providing structural support, granulation tissue also contains various growth factors and cytokines that are important for further healing processes. This phase aims to restore the integrity of the tissue by filling in the wound and initiating tissue repair. Angiogenesis, or the formation of new blood vessels, is a critical aspect of this phase, ensuring that the healing tissue receives adequate oxygen and nutrients necessary for regeneration.

The other processes mentioned in the other options occur at different stages of healing. For example, wound cleaning and sealing predominantly take place during the inflammatory phase, while resolution and repair refer to the final stages of healing where the tissue matures and remodels. Additionally, vasoconstriction is primarily a response seen immediately following injury and during the inflammatory phase to minimize blood loss.