## **Core Concept**
Appendices epiploicae, also known as epiploic appendages, are small, fat-filled pouches or appendages that are attached to the serosa of the large intestine. They are a characteristic feature of the large intestine and play a role in increasing the surface area for absorption and possibly aiding in the immune function.

## **Why the Correct Answer is Right**
The correct answer, **C. Rectum**, is right because appendices epiploicae are typically found on the ascending colon, transverse colon, descending colon, and sigmoid colon. These structures are parts of the large intestine where these fatty appendages are commonly observed. The rectum, being a part of the large intestine primarily involved in storing feces until they are expelled, usually does not have appendices epiploicae.

## **Why Each Wrong Option is Incorrect**
- **Option A:** The **Cecum** does have appendices epiploicae. These structures can be found on the cecum, which is the beginning part of the large intestine.
- **Option B:** The **Sigmoid colon** also contains appendices epiploicae. The sigmoid colon, being part of the large intestine, commonly has these fatty appendages.
- **Option D:** The **Descending colon** is another site where appendices epiploicae can be found. These appendages are characteristic of the large intestine, including the descending colon.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that while appendices epiploicae are a normal anatomical feature, they can sometimes become torsed, leading to a condition known as epiploic appendagitis. This condition can mimic acute appendicitis and is an important differential diagnosis in patients presenting with abdominal pain.

## **Correct Answer:** . **Rectum**