For example, vacuoles in stomata cells contain large numbers of potassium ions, which can be pumped in or out to open or close the stomata. Animal Cells In animal cells, vacuoles serve more subordinate roles, such as assisting in endo- and exocytosis or basic storage of food and waste. Central Vacuole The central vacuole is found only in plant cells. It is filled with water and is pressurised, like a balloon. This forces all the other organelles within the cell out toward the cell wall. This pressure is called turgor pressure and is what gives plants their crisp and firm structure.
A nasogastric (NG) tube is a long, narrow feeding tube that goes through your nose and down into your stomach. The NG tube is soft and bendable. (See the diagram) When you leave the hospital, you should be able to: Give yourself liquid food and water through the feeding tube. Give yourself medication through the tube.
A nasogastric tube is a narrow bore tube passed into the stomach via the nose. It is used for short- or medium-term nutritional support, and also for aspiration of stomach contents - eg, for decompression of intestinal obstruction. A wide bore tube is used if drainage is needed; otherwise, a finer bore tube is used. Fine bore feeding tubes (gauge less than 9) cause less discomfort and less risk of rhinitis, pharyngitis or oesophageal erosion. The use of a nasogastric tube is suitable for enteral feeding for up to six weeks. Polyurethane or silicone feeding tubes are unaffected by gastric acid and can therefore remain in the stomach for a longer period than PVC tubes, which can only be used for up to two weeks.