Which is the correct sequence of parts in human alimentary canal?

Options

A. Mouth `to` Stomach `to` Small intestine `to` Oesophagus `to` Large intestine
B. Mouth `to` Oesophagus `to` Stomach `to` Large intestine `to` Small intestine
C. Mouth `to` Stomach `to` Oesophagus `to` Small intestine `to` Large intestine
D. Mouth `to` Oesophagus `to` Stomach `to` Small intestine `to` Large intestine

Explanation

**Step-by-Step Solution:**

1. **Identify the Starting Point**: The human alimentary canal begins with the mouth, where food is ingested.

2. **Follow the Path of Food**: After the mouth, the food travels down the esophagus. This is a muscular tube that connects the mouth to the stomach.

3. **Next Stop - Stomach**: The food then enters the stomach, where it undergoes partial digestion due to the action of gastric juices.

4. **Proceed to the Small Intestine**: After the stomach, the partially digested food moves into the small intestine. This is where the complete digestion and absorption of nutrients occur.

5. **Move to the Large Intestine**: Following the small intestine, the remaining waste products travel to the large intestine, where water is absorbed, and the waste is prepared for excretion.

6. **Final Destination - Rectum and Anus**: Finally, the waste is stored temporarily in the rectum before being expelled from the body through the anus.

7. **Correct Sequence**: Therefore, the correct sequence of parts in the human alimentary canal is:
- Mouth
- Esophagus
- Stomach
- Small Intestine
- Large Intestine
- Rectum
- Anus

**Conclusion**: The correct answer to the question regarding the sequence of parts in the human alimentary canal is option D.

---