Identify the organ where 90 per cent of the food gets digested and also explain its different parts.

Explanation

**Step-by-Step Solution:**

1. **Identify the Organ**: The organ where 90% of food gets digested is the **small intestine**.

2. **Parts of the Small Intestine**: The small intestine is divided into three main parts:
- **Duodenum**: This is the first part of the small intestine. It is the shortest segment and is C-shaped. The duodenum is where the initial stages of digestion occur, as it receives digestive enzymes from the pancreas and bile from the liver.

- **Jejunum**: This is the second part of the small intestine and is the middle section. The jejunum is primarily involved in the absorption of nutrients from digested food.
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