\(y=\frac{1}{x}\) 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.
Common causes of puncture wounds are wood splinters, pins, nails, and glass. Puncture wounds may also be caused by objects such as scissors and knives. Almost any sharp object can potentially cause a puncture wound. Puncture wounds usually cause pain and mild bleeding at the site of the puncture.