Word: sphincters
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Dates: during 1886-1886
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...mouth the food passes through the oesophagus to the stomach, which is a hollow muscular organ, and provided with a number of glands which produce the gastric juice. The muscles of the stomach are described as consisting of three layers. At the lower opening is a muscle called the sphincter, which opens and shuts the outlet into the intestines. The mucous membrane lining the stomach is continuous with that in the mouth, running along down through the oesophagus. When the stomach is empty it is thrown into folds, which become smooth as it fills up. Alexis St. Martin...