Question

Identify the proper sequence in the healing process.

a. A blood clot forms; granulation tissue grows into the gap; new blood vessels develop; phagocytosis of foreign material and cell debris occurs; and collagen fibers form a tight, strong scar.
b. A blood clot forms; phagocytes remove foreign material and cell debris; granulation tissue grows into the gap; new blood vessels form; and collagen fibers promote formation of a tight, strong scar.
c. Collagen fibers form in the damaged area; a blood clot forms; granulation tissue grows into the gap; angiogenesis takes place; and foreign material and cell debris have been removed by phagocytes.
d. Foreign material and cell debris have been removed by phagocytes; a blood clot forms; granulation tissue grows into the gap; new blood vessels form; and collagen fibers grow and cross-link.

Answer 1

The healing process follows this sequence: clot formation, phagocyte cleaning, granulation tissue development, angiogenesis, and collagen fiber scar formation.

Step-by-step explanation:

The correct sequence in the healing process is b. A blood clot forms; phagocytes remove foreign material and cell debris; granulation tissue grows into the gap; new blood vessels form; and collagen fibers promote the formation of a tight, strong scar.

After an injury, the healing begins with the formation of a blood clot to stem bleeding and bind wound edges. Phagocytes then clear toxins and cell debris. Fibroblasts produce collagen to replace lost material, and new blood vessels grow within granulation tissue. As the clot dissolves, a strong collagenous scar forms to complete the repair. Clotting helps reduce blood loss and forms a network of fibrin proteins that trap blood cells and bind the edges of the wound together.