Question

discuss the regulation of gastric secretion, gastric mobility and gastric emptying. Include neural and chemically mediated processes and mechanisms

give me a good answer thanks

Answer 1

Regulation of gastric secretion:

Stomach mucusa's epithelial lining consists of surface mucus cells which secretes of protective coat of alkaline mucus.

Stomach wall is adopted for function of stomach. in the epithelium pits lead to gastric glan that secret gastric juice.the gatsric gland contain different types of cells that secrets variety of enzymes including hydrochloric acid which activates the protein digesting enzyme called pepsin.

although the wall of gastric pits are made up primarily of mucus cells,gastric glands are made up of diiferent types of cells. The glands of cardia and pylorus are composed of primarily of mucus-secretory cells.

Parietal cells: located primarily in the middle region of the gastric glands are parietal cells which are among highly differentiated of the body epithelial cells.These relatively large cells produce both hydrochloric acid and intrinsic factor.HCL is responsible for the high acidity of stomach (1.5 - 3.8) of stomach content and protein digestive enzyme pepsin.and intrinsic factor is a glycoprotein responsible for the absorption of vit.B12 in small intestine.

Gastric mobility and gastric emptying.

Contraction of gastric smooth muscles serves two basic functions, ingested food is crushed,ground and mixed, liquifying it to form what is called chyme.

Chyme is forced through the pyloric canal into the smll intestine is a process called as gastric emptying.

Gastric mobility is controlled by a very complex neural and hormonal signal.

The process of gastric secretion can be divided into hree