Mitochondria
are energy-producing organelles. The multi-layered process of converting food into energy is called cellular respiration. A pathway is a series of biochemical reactions. Cellular respiration refers to a series of pathways occurring in the presence of oxygen.

What Is the Gastric Mucosa? The gastric mucosa is a layer of mucous membrane found in the stomach. This lining is found on the inner surface of the stomach, along with the glands and gastric pits. It is always covered in a layer of thick mucus secreted by columnar epithelial and glandular cells.

Gastric cancer is a disease in which malignant (cancer) cells form in the lining of the stomach. Age, diet, and stomach disease can affect the risk of developing gastric cancer. Symptoms of gastric cancer include indigestion and stomach discomfort or pain.

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