Correct arrangement of muscles from outer to inner in muscularis of stomach in humans is

Options

A. Circular, oblique, longitudinal
B. Oblique, longitudinal, circular
C. Longitudinal, circular, oblique
D. Circular, longitudinal, oblique

Answer

To determine the correct arrangement of muscles from outer to inner in the muscularis layer of the stomach in humans, we need to identify the three muscle layers present in this region.

### Step-by-Step Solution:

1. **Understanding the Structure of the Stomach**:
- The stomach is a vital organ in the digestive system, composed of several layers. The muscularis layer is particularly important for its role in digestion through peristalsis and mixing of food.

2. **Identifying the Layers of the Muscularis**:
- The muscularis layer consists of three distinct layers of muscle fibers. These layers are arranged in a specific order from the outermost to the innermost.

3. **Correct Order of Muscle Layers**:
- The outermost layer is the **longitudinal layer**. This layer runs along the length of the stomach and is responsible for the shortening and lengthening of the stomach during contractions.
- The middle layer is the **circular layer**. This layer encircles the stomach and helps in the constriction and mixing of the stomach contents.
- The innermost layer is the **oblique layer**. This layer runs diagonally and aids in the churning and mixing of food with gastric juices.

4. **Final Arrangement**:
- Therefore, the correct arrangement of the muscularis from outer to inner is: **Longitudinal → Circular → Oblique**.

5. **Conclusion**:
- Based on the options provided, the correct answer is option number C, which states the order as Longitudinal, Circular, and Oblique.