Digestive 2
Terms
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- oral cavity
- part of the digestive tract that receives food; opens into the mouth
- buccal cavity
- another name for the oral cavity
- cheeks
- form the lateral wall of the chamber
- labia
- another name for lips; anterior with the cheeks
- vestibule
- the space between the ceeks or lips and the teeth
- gingivae
- the gums that surround the base of the teeth; cover tooth-bearing surfaces of upper and lower jaw
- hard/ soft palate
- forms a roof for the oral cavity
- lingual frenulum
- the thin fold of mucous membrane that connects the tongue to the underlying epithelium
- tongue
- a muscle that manipulates materials inside the mouth and is occasionally used to bring foods into the oral cavity
- parotid salivary gland
- lies under the skin covering the lateral and posterior surfaces of the mandible
- parotid duct
- enters into the vestibule at the level of the second layer molar
- sublingual salivary gland
- located beneath the mucous membrane of the floor of the mouth
- submandibular salivary gland
- in the floor of the mouth along the inner surfaces of the mandible
- lysozyme
- help control population of oral bacteria
- salivary amylase
- an enzyme that breaks down starches into smaller molecules that can be absorbed in the digestive tract; produced in parotid glands
- pharynx
- serves as a passageway for solid food, liquids, and air
- esophagus
- a muscular tube that conveys solid foor and liquids to the stomach
- upper esophagus
- superior portion of esophagus
- lower esophagus
- inferior portion of esophagus
- deglutition
- swallowing; complex process that can be initiated voluntarily but proceeds automatically once it begins
- bolus
- a small mass that the tongue compacts the debris into
- oral phase
- where swallowing brgins with the compression of the holus against the hard palate
- pharyngeal phase
- process of swallowing when the holus comes in contact with thesensory receptors around the pharynx and the posterior pharyngeal wall
- awallowing reflex
- occurs when the larynx elevates and the epiglottis folds to direct the bolus past the closed bolus
- esophageal phase
- begins as the bolus enter the esophagus; the bolus is pushed towards the stomach by a peristaltic contraction
- ascites
- an abdominal swelling that results from accumulation of fluid; occurs in several organs
- mumps virus
- targets salivary gland as well as other organs; infection
- esophagitis
- inflammation of the esophagus that is caused by a weakened or permanently relaxed esophageal sphincter
- esophageal hiatus
- an openning in the diaphragm where esophagus and other major blood vessels pass from the thoracic cavity to the abdominopelvic cavity
- diaphragmatic hernia
- abdominal organs slide up into the thoracic cavity through the esophageal hiatus
- hiatal hernia
- another name for diaphragmatic hernia