Small intestine is distiguishable into three regions, a 'C' shaped (A)____ a long coiled middle portion (B)____ and a highly coiled (C)____

Answer

To answer the question regarding the three regions of the small intestine, we can break it down step by step:

1. **Identify the first region (A)**: The first part of the small intestine is described as a 'C' shaped structure. This part is known as the **duodenum**. It is responsible for the initial phase of digestion, where chyme from the stomach mixes with bile and pancreatic juices.

2. **Identify the second region (B)**: The second part of the small intestine is described as a long coiled middle portion. This section is called the **jejunum**. The jejunum is primarily involved in the absorption of nutrients and continues the process of digestion.

3. **Identify the third region (C)**: The final part of the small intestine is described as a highly coiled structure. This part is known as the **ileum**. The ileum is responsible for the absorption of vitamin B12, bile salts, and any remaining nutrients before the remaining waste is passed into the large intestine.

Putting it all together, we can fill in the blanks:
- A: duodenum
- B: jejunum
- C: ileum

**Final Answer**: Small intestine is distinguishable into three regions, a 'C' shaped (A) **duodenum**, a long coiled middle portion (B) **jejunum**, and a highly coiled (C) **ileum**.

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