Digestive System and Oral Physiological Phenomena

A Medical Subject Headings category for physiological processes involving the digestive system and oral cavity, including digestion, secretion, absorption, and oral functions.

Connect

Digestion: The mechanical and chemical breakdown of food into substances the body can absorb. It is the central process represented by this physiological category.
Enteric Nervous System: A network of neurons in the gastrointestinal wall that regulates local digestive functions. It coordinates motility and secretion within the digestive tract.
Gastroesophageal Reflux Disease: A disorder in which stomach contents repeatedly flow back into the esophagus and cause troublesome symptoms or complications. Reflux exposes the role of barriers and motility in digestive function.
Oral Cavity: The space inside the mouth containing the teeth, tongue, and openings of salivary glands. It is the oral anatomical setting for chewing, taste, and saliva.
Gastrointestinal Motility: Movements of the gastrointestinal tract that mix and propel its contents. Motility moves food through the digestive pathway and supports digestion.
Gastrointestinal Hormones: Hormones released by the gut that regulate digestion, appetite, and gastrointestinal activity. These signals adjust digestive processes to food and internal conditions.
Gastroparesis: Delayed stomach emptying without a mechanical obstruction, often accompanied by nausea and early fullness. It illustrates how impaired gastric motility disrupts digestion.
Gastrointestinal Tract: The continuous passage from mouth to anus through which food is processed and waste is eliminated. It provides the main anatomical pathway covered by the category.
Gastrointestinal Secretion: The release of fluids and substances into the gastrointestinal tract. Secretions supply enzymes, acid, mucus, and other materials needed for digestion.
Gastric Acid: Hydrochloric acid secreted by the stomach that creates a strongly acidic environment. Its acidity supports protein digestion and helps control ingested microbes.