Acidity. Our stomach produces acid to digest the food that we eat. This is a regular and natural process. Whenever we eat, cells within the lining of the stomach pump acid to liquefy your sumptuous dinner, from mash potatoes to a slab of steak.ur stomach produces acid to digest the food that we eat. This is a regular and natural process. Whenever we eat, cells within the lining of the stomach pump acid to liquefy your sumptuous dinner, from mash potatoes to a slab of steak.
2. Thoracic cavity: thoracic means chest, this cavity is located in the anterior portion of the body and the mediastinum. It contains the cavity that surrounds the breast bone and ribs. Containing the lungs, heart, trachea, larynx and bronchial tubes.
The pleural cavity is an area which surrounds the lung. Each lung is inside an isolated pleural cavity, with the lungs forming inside the cavity during fetal development. This space inside the body is formed between the parietal and visceral pleura which line the lungs and body cavity.ach lung is inside an isolated pleural cavity, with the lungs forming inside the cavity during fetal development. This space inside the body is formed between the parietal and visceral pleura which line the lungs and body cavity.