The pyloric sphincter is a band of smooth muscle that plays an ... The force of these contractions increases in the lower parts of the stomach. ... When the pyloric sphincter doesn't work properly, bile can make its way ... Pyloric stenosis is a condition in infants that blocks food from entering the small intestine.
It is more permeable to carbon dioxide such as other gases and also it is permeable to urea because it can make interaction with urea and dissolves it inside the cell.
