The innermost layer in the wall of alimentary canal is
(a) serosa
(b) muscles
(c) mucosa
(d) submucosa

Options

A. serosa
B. muscles
C. mucosa
D. submucosa

Explanation

To determine the innermost layer of the wall of the alimentary canal, we can analyze the options provided:

1. **Understanding the Layers of the Alimentary Canal**:
- The wall of the alimentary canal consists of four distinct layers:
- **Serosa**: This is the outermost layer and is made up of a thin layer of mesothelium and connective tissue.
- **Muscularis**: This layer consists of smooth muscle arranged in two sub-layers: the inner circular layer and the outer longitudinal layer.
- **Submucosa**: This layer is made of loose connective tissue and contains nerves and blood vessels.
- **Mucosa**: This is the innermost layer that lines the lumen of the alimentary canal.

2. **Identifying the Innermost Layer**:
- Among the four layers mentioned, the mucosa is the layer that directly lines the lumen of the alimentary canal. It is responsible for the secretion of mucus and digestive enzymes and is involved in absorption.

3. **Conclusion**:
- Based on the analysis, the innermost layer of the wall of the alimentary canal is the **mucosa**. Therefore, the correct answer is option **(c) mucosa**.