Stomach - Control of secretion and motility

In anatomy, the stomach (in ancient Greek στόμαχος) is an organ in the alimentary canal used to digest food. Generally, the stomach's primary function is not the absorption of nutrients from digested food; this task is usually performed by the intestine. The main job of the stomach is to break down large food molecules into smaller ones, so that they can be absorbed into the blood more easily. Latin names for the stomach include Ventriculus and Gaster; many medical terms related to the stomach ...

Including:

• Stomach - Anatomy of the human stomach
• Stomach - Histology of the human stomach
• Stomach - Control of secretion and motility
• Stomach - Diseases

Read more here: » Stomach: Encyclopedia - Stomach

The movement and the flow of chemicals into the stomach are controlled by both the autonomic nervous system and by various digestive system hormones. The hormone gastrin causes an increase in the secretion of HCl, pepsinogen and intrinsic factor from parietal cells in the stomach. It also causes increased motility in the stomach. Gastrin is released by G cells in the stomach to distenstion of the antrum, and digestive products. It is inhibited by a pH normally ...

See also:

Stomach, Stomach - Anatomy of the human stomach, Stomach - Histology of the human stomach, Stomach - Control of secretion and motility, Stomach - Diseases

Read more here: » Stomach: Encyclopedia II - Stomach - Control of secretion and motility

Like the other parts of the gastrointestinal system, the stomach walls are made of a number of layers. Starting inside the (the lumen) going out, the first main layer is the mucosa. This consists of an epithelium, the lamina propria underneath, and a thin bit of smooth muscle called the muscularis mucosa. The submucosa lies under this and consists of fibrous connective tissue, it separates the mucosa from the next layer, the muscularis externa. The muscularis in the stomach differs from other GI organs in t ...

See also:

Stomach, Stomach - Anatomy of the human stomach, Stomach - Histology of the human stomach, Stomach - Control of secretion and motility, Stomach - Diseases

Read more here: » Stomach: Encyclopedia II - Stomach - Histology of the human stomach

The stomach lies between the esophagus and the first part of the small intestine (the duodenum). It is on the left side of the abdominal cavity, the fundus of the stomach lying against the diaphragm. Lying beneath the stomach is the pancreas, and the greater omentum hangs from the greater curvature. It is divided into five sections, each of which have different cells and functions. The gastric juice which is in the stomach has a pH of 1-3. The pH (power of hydrogen) scale goes from 1 to 14; the lower the pH, the more acidic a substance is. Sometimes gastric juice erodes t ...

See also:

Stomach, Stomach - Anatomy of the human stomach, Stomach - Histology of the human stomach, Stomach - Control of secretion and motility, Stomach - Diseases

Read more here: » Stomach: Encyclopedia II - Stomach - Anatomy of the human stomach