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Week 14 psyiology
| Term | Definition |
|---|---|
| Ingestion | Process of taking food into the mouth, starting it on its journey through the digestive tract |
| Digestion | Process of taking food into the mouth, starting it on its journey through the digestive tract A group of processes that break complex nutrients into simpler ones, thus facilitating their absorption; mechanical digestion physically breaks large chunks int |
| Motiliyt | Movement by the muscular components of the digestive tube, including processes of mechanical digestion; examples include peristalsis and segmentation |
| Secretion | Release of digestive juices (containing enzymes, acids, bases, mucus, bile, or other products that facilitate digestion); some digestive organs also secrete endocrine hormones that regulate digestion or metabolism of nutrien |
| Absorption | Elimination Regulation Movement of digested nutrients through the gastrointestinal (GI) mucosa and into the internal environment |
| Elimination | Regulation Movement of digested nutrients through the gastrointestinal (GI) mucosa and into the internal environment Excretion of the residues of the digestive process (feces) from the rectum, through the anus; defecati |
| Regulation | Movement of digested nutrients through the gastrointestinal (GI) mucosa and into the internal environment Excretion of the residues of the digestive process (feces) from the rectum, through the anus; defecation Coordination of digestive activity (motility |
| Mastication | Mechanical digestion begins in the mouth when the particle size of ingested food material is reduced by chewing movements |
| Deglutition | involves three main steps, or stages, that may be divided into the formation and then move-ment of a food bolus from the mouth to the stomach (Figure 40-2): 1. Oral stage (mouth to oropharynx) 2. Pharyngeal stage (oropharynx to esophagus) 3. Esophageal st |
| Peristalsis | is often described as a wavelike ripple of the muscle layer of a hollow organ. |
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