The undigested and unabsorbed substances called faeces enters into the caecum of large intestine through

Options

A. micelle
B. chyle
C. feces
D. chyme

Answer

To solve the question regarding how undigested and unabsorbed substances called feces enter into the cecum of the large intestine, we can follow these steps:

### Step 1: Understand the Digestive Process
- The digestive process begins when food enters the stomach, where it is mixed with gastric juices. This mixture is known as chyme.

**Hint:** Remember that chyme is the result of food mixing with gastric juices in the stomach.

### Step 2: Movement Through the Digestive Tract
- After the stomach, chyme moves into the small intestine, where further digestion and absorption occur. The last part of the small intestine is called the ileum.

**Hint:** The ileum is the final segment of the small intestine before the large intestine.

### Step 3: Transition to the Large Intestine
- Once the chyme has passed through the ileum, it enters the cecum, which is the first part of the large intestine. At this point, the undigested and unabsorbed substances are referred to as feces.

**Hint:** The cecum is the area where the small intestine connects to the large intestine.

### Step 4: Identify the Correct Term
- The question provides several options: micelle, chyle, feces, and chyme. The correct term for the material that enters the cecum is not directly feces, but rather the chyme that has not been fully digested and absorbed.

**Hint:** Chyme is the term used for the semi-fluid mass that moves from the stomach to the small intestine and then to the cecum.

### Conclusion
- Therefore, the undigested and unabsorbed substances (feces) enter the cecum of the large intestine through the ileum, which is the last part of the small intestine.

**Final Answer:** The correct answer is chyme, as it is the substance that transitions into the cecum.

### Summary of Steps
1. Understand that chyme is formed in the stomach.
2. Recognize that chyme moves to the ileum.
3. Identify that the ileum connects to the cecum of the large intestine.
4. Conclude that the correct term for the substance entering the cecum is chyme.