\(y=\frac{1}{x}\) This means that the line y=0 is a horizontal asymptote. Horizontal asymptotes occur most often when the function is a fraction where the top remains positive, but the bottom goes to infinity. Going back to the previous example, \(y=\frac{1}{x}\) is a fraction.
Causes of Wounds. Wound causes can be internal or external in origin. Wounds of internal origin are mainly due to impaired circulation, neuropathy or medical illness. Wounds of external origin are due to an outside force or trauma that causes open or closed wounds.
Posted June 24, 2009 by. The formation of scars is caused by trauma to the skin. Under the area of trauma, healing cells called fibroblasts migrate to the site of the injury. These fibroblasts cover over the damaged area and form collagen, which is the building block of scar tissue. Normally, collagen fibers line up in a parallel fashion, forming a bridge across the wound.