Ice and water never fail to keep the hooligans entertained. A backyard water wall is easy to make with a few recyclable containers. The hooligans have enjoyed hours of fun with this one over the years. Sand, water and soap are all you need to set up a pretend coffee shop for your little ones.
Print. 1  Pylorus. Pylorus The pylorus is a muscular valve that holds food in the stomach until it is ready for the next stage in the digestive process. 2  Pyloric stenosis. Pyloric stenosis In pyloric stenosis, the pylorus muscles thicken, blocking food from entering the baby's small intestine.
Helicobacter pylori, or H. pylori, is a spiral-shaped bacterium that grows in the mucus layer that coats the inside of the human stomach. To survive in the harsh, acidic environment of the stomach, H. pylori secretes an enzyme called urease, which converts the chemical urea to ammonia. The production of ammonia around H. pylori neutralizes the acidity of the stomach, making it more hospitable for the bacterium.