Catgut suture used on a kit, or fiddle). Misinterpretation of the word kit as referring to a young cat led to the use of the term catgut. Surgical gut is in fact made from the submucosa of sheep intestine or the serosa of bovine intestine and is approximately 90% collagen. Perhaps another possible explanation of the name is the combination of the words cattle and gut. B Braun Medical AG, a German Multi National company first industrialized catgut suture and Catgut is a brand registered with B Braun. Catgut Chrome (B Braun) suture is a variant treated with chromic acid salts. This
Musical instrument more artistic approach and develop experimental musical instruments, often meant for individual playing styles developed by the builder himself. Regardless of how the sound in an instrument is produced, many musical instruments have a keyboard as the user-interface. Keyboard instruments are any instruments that are played with a musical keyboard. Every key generates one or more sounds; most keyboard instruments have extra means (pedals for a piano, stops and a pedal keyboard for an organ) to manipulate these sounds. They may produce sound by wind being fanned (organ) or pumped (accordion), vibrating strings either hammered (piano) or plucked (harpsichord), by