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Tracy Wasson
Anatomy week 13
| Term | Definition |
|---|---|
| Ingestion | Process of taking food into the mouth, starting it on its journey through the digestive tract |
| Digestion | A group of processes that break complex nutrients into simpler ones, thus facilitating their absorption; mechanical digestion physically breaks large chunks into small bits; chemical digestion breaks molecules apart |
| Motility | 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 nutrients |
| Absorbtion | Movement of digested nutrients through the gastrointestinal (GI) mucosa and into the internal environment |
| elimination | Excretion of the residues of the digestive process (feces) from the rectum, through the anus; defecation |
| regulation | Coordination of digestive activity (motility, secretion, etc.) |
| mastication | Mechanical digestion begins in the mouth when the particle size of ingested food material is reduced by chewing movements, |
| deglutination | 1. Oral stage (mouth to oropharynx) 2. Pharyngeal stage (oropharynx to esophagus) 3. Esophageal stage (esophagus to stomach) |
| propulsion | milky material known as chyme, which is ejected about every 20 seconds into the duodenum. while chyme is in the stomach, it is continually being pushed toward the pyloric sphincter by waves of peristaltic contractions— |
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tracy wasson
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