The surname Murchison was first found in Inverness, where they held a family seat from very ancient times. They are believed to be descended from Murdoch, a natural son of Angus Mor of Islay of the Clan Donald.
Tunneling means that a wound has channels extending from the central injury into the surrounding tissue, such as muscle and skin. These tunnels inhibit the wound's healing rate, as the flesh is unable to maintain contact long enough for the mending process to initiate.
Hi, I'm new to the nursing forum ... saw your post. It's been a while, so you may already have clarified your problem. Basically, sinus tracts & tunneling is the same thing, just different terms. Undermining is a wider area of wounding that lies beneath the wound opening. Think of undermining like this: the wound is larger than the hole or entrance of the wound. Tunneling is like a cave, undermining is like a cavern or cavity.