Human stomach contains epithelial, glandular and muscular tissue - give examples of functions of each of these tissues

The human stomach contains epithelial, glandular, and muscular tissue, each of which performs a specific function:

1. Epithelial tissue: The epithelial tissue lines the inner surface of the stomach and helps to protect the stomach from the harsh acidic environment. It also secretes mucus that lubricates the stomach lining and helps to protect it from digestive enzymes.
2. Glandular tissue: The glandular tissue of the stomach includes cells that produce hydrochloric acid and enzymes like pepsinogen. The hydrochloric acid helps to break down food, while pepsinogen is converted to pepsin by the acid and helps to break down proteins.
3. Muscular tissue: The muscular tissue of the stomach includes smooth muscle fibers that contract and relax to mix and propel food through the stomach. The muscular tissue also helps to regulate the rate at which food enters the small intestine for further digestion and absorption.

In summary, the epithelial tissue protects the stomach lining, the glandular tissue produces digestive enzymes and acid, and the muscular tissue helps to mix and propel food through the stomach.