Prepare for the Tissue Injury, Healing, and Pain Test. Utilize flashcards and multiple-choice questions with hints and explanations. Ensure you're ready for the exam!

Multiple Choice

During the proliferative phase, which type of collagen is primarily formed to form scar tissue?

In the proliferative phase, fibroblasts lay down extracellular matrix to fill the wound, and the collagen initially produced is Type III. This form forms a loose, reticular scaffold that supports new tissue and helps with early tissue strength and vascular ingrowth. As healing progresses into remodeling, Type III is gradually replaced by Type I collagen, which provides greater tensile strength to the scar. Elastic fibers contribute but are not the primary collagen type, and collagen is indeed produced, so options suggesting no collagen would be incorrect.

In the proliferative phase, fibroblasts lay down extracellular matrix to fill the wound, and the collagen initially produced is Type III. This form forms a loose, reticular scaffold that supports new tissue and helps with early tissue strength and vascular ingrowth. As healing progresses into remodeling, Type III is gradually replaced by Type I collagen, which provides greater tensile strength to the scar. Elastic fibers contribute but are not the primary collagen type, and collagen is indeed produced, so options suggesting no collagen would be incorrect.