From what source is surgical gut derived?

Surgical gut is traditionally derived from the submucosa layer of sheep's intestines. This material is preferred for sutures in surgical procedures because it is composed of collagen, which is biocompatible and provides strength while also being gradually absorbed by the body. The use of submucosa ensures that the sutures have both adequate tensile strength and a predictable absorption rate, making them suitable for various surgical applications.

The other options do not provide the same qualities or materials needed for surgical gut. For instance, swine’s intestines might have different properties that do not align with the desired outcomes for sutures, and cow’s skin is more commonly associated with different types of sutures not classified as surgical gut. Similarly, while chicken gizzard lining can serve various purposes in other contexts, it lacks the specific biocompatibility and absorption qualities required for surgical gut.