Final answer:
The cecum is the part of the large intestine that attaches to the appendix. While the large intestine features the taenia coli, haustra, and appendices epiploicae, the small intestine is described as 'smooth' due to its muscle layers that aid in digestion.
Step-by-step explanation:
The student asked about the unique features of the large intestine, namely the taenia coli, haustra, and appendices epiploicae, and requested an identification of a related feature within the small intestine. The correct description for the small intestine in the context given is 'smooth' due to its structure made up of smooth muscle layers. The part of the large intestine that attaches to the appendix is the cecum.
The taenia coli are three bands of smooth muscle that give the large intestine its characteristic appearance. They form the longitudinal muscle layer of the muscularis, which leads to the formation of the haustra, or pouches. The appendices epiploicae are fat-filled sacs attached to the taenia coli whose function is still not clearly understood.
In contrast, the small intestine is made up of a double layer of smooth muscle, which includes an inner circular layer and an outer longitudinal layer. These muscle layers are responsible for mechanical digestion and moving food along the alimentary canal.