\(y=\frac{1}{x}\) 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.
However, despite an increase in blood flow there is a decreased delivery of oxygen and life-giving food to the tissues. The leaking of red blood cells into the tissues through small holes in the vein walls helps to cause the skin staining or hyperpigmentation seen in the disease. Work is taking place to learn what is causing the wound or ulcer to form.