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.
by Laurie Swezey RN, BSN, CWOCN, CWS, FACCWS. As part of a thorough wound assessment, in addition to noting location and measuring size, the entire wound bed should be probed for the presence of tunneling and/or undermining. If you are unsure what tunneling and undermining are and how to recognize these phenomena, here's an explanation of these terms and how to assess wounds for their presence.