Theesophagusis the muscular tube leading from the throat to the stomach. It directs and food and drink into the stomach for digestion and absorption which continues through the small intestine.Esophageal motilityensures that peristaltic waves that start in the throat during swallowing continues to pro...
In order to function properly, the human body requires nutrients. Some such nutrients serve as raw materials for the synthesis of cellular materials, while others help regulate chemical reactions or, upon oxidation, yield energy. Many nutrients, however, are in a form that is unsuitable for immed...
Food does not spend enough time in the mouth to allow all the carbohydrates to break down, but salivary amylase continues acting until it is inactivated by stomach acids. Bicarbonate and phosphate ions function as chemical buffers, maintaining saliva at a pH between 6.35 and 6.85. Salivary mucus...
The function of the GI tract is to extract nutrients from the ingested food to provide building blocks for bodies and energy to power its movement and metabolism. The GI tract is basically a tube that runs from mouth to anus. The tube has specialized areas that are separated by muscular ...
What is Esophagus and Trachea? Esophagus: The esophagus is a muscular tube that connects the throat (pharynx) to the stomach. Its main function is to transport food and liquids from the mouth to the stomach for digestion. The walls of the esophagus have muscles that contract in a coordinated...
The structure of the esophagus dictates its function, with skeletal muscle fibers more pronounced within the proximal esophagus and smooth muscle fibers more pronounced within the distal esophagus; which allows for smooth transport of ingested food products towards the stomach [4]. On double contrast ...
The esophagus wall is composed of striated muscle in the upper part, smooth muscle in the lower part, and a mixture of the two in the middle. The myenteric plexus is well developed in the smooth muscle, but is also present in the striated muscle part of the esophagus. The function of ...
The Stomach: Regions, Histology & Role in Ingestion The Large Intestine & Colon: Fecal Formation & Defecation Large Intestine Lesson for Kids: Function & Facts Deglutition Definition, Anatomy & Phases The Upper Alimentary Canal: Key Structures, Digestive Processes & Food Propulsion Create an account...
The mucin forms a thin layer on the surface of the epithelium that protects the cells from autodigestion by luminal strong acid. Gastric contents can have many other elements: (1) food; (2) saliva; (3) intrinsic factor; (4) bile, in people who regurgitate bile from the duodenum to the...
Collagenase and elastase increased the thickness in the separated mucosa-submucosa layer compared to the control (P < 0.05). Disconnection between the epithelia and the lamina propria was histologically observed after elastase digestion. In conclusion, collagenase and elastase caused the opening angle ...