Flashcards in Chapter 24: The Digestive System Deck (67)
Name organs in the digestive system.
List accessory structures of the digestive system.
1. Salivary glands
The active process that occurs when materials enter the digestive tract via the mouth is...
the lining of the digestive tract plays a defensive role by protecting surrounding tissues against...
1. corrosive effects of digestive acids and enzymes
2. mechanical stresses
3. pathogenic organisms swallowed with food
sympathetic stimulation of the muscularis externa promotes...
muscular inhibition and relaxation
the mucous-producing, unicellular glands found in the mucosal epithelium of the stomach and small and large intestine are..
mucous (goblet) cells
which of the layers of the digestive tube is most responsible for peristalsis along the esophagus?
the muscular layers involved with peristalsis are described as...
circular and longitudinal
swirling, mixing, and churning motions of the digestive tract provide...
mechanical processing after ingestion
powerful peristaltic contractions moving the contents of the colon toward the rectum are called...
accelerated secretions by the salivary glands, resulting in the production of watery saliva containing abundant enzymes, are promoted by...
the submandibular glands produce saliva, which is...
both mucus and serous
the three pairs of salivary glands that secret into the oral cavity are the...
parotid, sublingual, and submandibular
crushing, mashing, and grinding food are accomplished by the action of...
the three phases of deglutition are...
buccal, pharyngeal, and esophageal
on its way to the esophagus, food normally passes through the...
oropharynx and laryngopharynx
the pharyngeal muscles that push the food bolus toard the esophagus are the...
pharyngeal constrictor muscles
the esophageal glands that produce a mucous secretion that reduces friction between the bolus and the esophageal lining are located in the...
the primary function of the esophagus is to...
convey solid foods and liquids to the stomach
the inferior end of the esophagus normally remains in a state of active contraction that...
prevents backflow of materials from the stomach into the esophagus
the hormone gastrin...
increases the activity of parietal and chief cells
the release of chyme from the stomach into the duodenum is regulated by the...
what inhibits gastric contractions?
3. distention of duodenal stretch receptors
what is secreted by the stomach?
the three divisions of the small intestine are...
duodenum, jejunum, and ileum
the myenteric plexus of the intestinal tract is found...
between the circular and longitudinal muscle layers
an enzyme not found in pancreatic juice is...
what happens to salivary amylase after it is swallowed?
it is digested and absorbed in the small intestine
the three phases of gastric function are...
cephalic, gastric, and intestinal