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Digestive System
Anatomy of Digestive System, Mnemonics, & Clinical Features
| Term | Definition |
|---|---|
| Oral Cavity | Function: where digestion begins, mastication & deglutition & mechanical digestion Contents: 32 teeth, tongue and uvula Location: Cranial Region |
| Salivary Glands | Function: secrete saliva into the oral cavity Contents: Saliva- amylase & lipase; Parotid Gland in Cheek, Submandibular & Sublingual Glands in Mandible Location: Cranial Region |
| Esophagus (Oesophagus) | Function: connects the mouth with the stomach to continue digestion; mechanical digestion through peristalsis Contents: rings of circular muscle tissue Location: Thoracic Region, anterior to the Spine, between C5 to T11 |
| Stomach | Function: mechanical mixing & chemical breaking of food Contents: Gastric Acid and Enzymes- Amylase, Maltase, Lactase, Lipase, Sucrase & Protease Location: Abdominal Region, Anterior to the Abdominal Aorta, Between the Sixth and Eight Rib |
| Liver | Function: (Exocrine) production of bile into the GB, (Endocrine) production and release of Insulin & Glucagon into the bloodstream; Metabolization of Nutrients; Glucose & Vitamin Storage Location: Abdominal Region, Inferior to the Diaphragm |
| Gallbladder (GB) | Function: stores & releases Bile from the Liver into the Duodenum Contents: Bile Location: Abdominal Region, Inferior & Ipsilateral to the Liver, Superior to the Transverse Colon |
| Pancreas | Function: (Exocrine) release of highly enzyme rich fluid with bicarbonate into the Duodenum; (Endocrine) hormone secretion in the bloodstream; the enzymes perform Chemical Digestion Location: Abdominal Region, Inferior to the Stomach |
| Small Intestine | Function: absorbtion of most substances; mechanical digestion through peristalsis; connection to large intestine Contents: (Segmentations) Duodenum, Jejunum & Ileum Location: Abdominal Region, inferior to the stomach, anterior to the abdominal Aorta |
| Large Intestine | Function: transportation of Chyme (indigestible food) to the anus by peristalsis; mild absorption of substances Contents: (Segmentation) Cecum, Ascending Colon, Transverse Colon, Descending Colon, Sigmoid Colon, Rectum, Anus Location: Abdominal Region |