What characteristic is associated with the type of repair known as granulation tissue?

• A. High tensile strength from the start
• B. Initial laying down of type 3 collagen
• C. Immediate restoration of normal function
• D. Rapid remodeling of existing tissue

Answer: (B)

Granulation tissue is crucial in the healing process, particularly during the proliferative phase of wound healing. This type of tissue is characterized by the initial laying down of type 3 collagen, which is a key component in the formation of granulation tissue. Type 3 collagen is produced early in the healing process and provides a framework for new tissue, allowing blood vessels and cells to infiltrate the area and begin the healing.

High tensile strength from the start is not a characteristic of granulation tissue because it initially lacks the strength and organization found in fully healed tissue. Instead, it is a temporary structure that provides basic support as healing progresses. Immediate restoration of normal function does not occur with granulation tissue, as it takes time for the tissue to mature and regain full function. Similarly, while remodeling does occur, granulation tissue itself involves initial formation rather than rapid remodeling of existing tissue, which is a later phase in the healing process. Therefore, the emphasis on the laying down of type 3 collagen correctly identifies the primary characteristic of granulation tissue.