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5 Written questions

5 Matching questions

  1. Epithelial Cells of Gastric Glands- Endocrine cells
  2. Esophagus
  3. Submucosal Nerve Plexus
  4. Regions of the Small Intestine
  5. Stomach, Small Intestine, and Large Intestine Surface Epithelium
  1. a Duodenum, Jejunum, and Ileum.
  2. b A hollow muscular tube, transports solid food and liquids to the stomach, and passes through the diaphragm muscle to get from the larynx to the abdomen.
  3. c G cells and Stem cells.
  4. d Function is digestion and absorption, and are lined with simple columnar epithelium for rapid transport across the epithelial lining.
  5. e Contains sensory neurons that sense chemical changes in the lumen, and motor neurons (sympathetic and parasympathetic) that innervate the muscularis mucosae.

5 Multiple choice questions

  1. Two thick layers of smooth muscles- inner and outer longitudinal, and involved in peristalsis, which is wave-like muscular contractions that move materials along digestive tract, and contains a nerve plexus.
  2. The first segment of the small intestine, begins at the pyloric sphincter: which controls flow from the stomach to here, about 1 foot long, and it receives: chyme from the stomach and digestive enzymes and buffers from pancreas and liver.
  3. Deep to the mucosa, dense irregular connective tissue, and contains large blood vessels, large lymphatic vessels, and large nerves.
  4. Mechanical processing: Through actions of teeth and tongue, lubrication: mixing with salivary gland secretions, and some digestion: saliva contains amylase (enzyme that breaks down starches), and lipase (enzyme that breaks down lipids).
  5. The epithelial lining is continuous, at the mouth and at the anus, with the external environment, it must accommodate these transitions at either end while remaining moist, it must also be very thin to accomplish both digestion and absorption, and it must handle the rapid turnover of its epithelial cells due to mechanical and chemical insults while protecting the deeper tissues against: chemical stresses corrosive effects of digestive acids and enzymes), mechanical stresses, such as abrasion, and pathogenic bacteria.

5 True/False questions

  1. IngestionOccurs when materials enter digestive tract via the mouth.

          

  2. Lamina PropriaTwo thick layers of smooth muscles- inner and outer longitudinal, and involved in peristalsis, which is wave-like muscular contractions that move materials along digestive tract, and contains a nerve plexus.

          

  3. Parietal cellsSecrete HCl (hydrochloric acid)- gastric acid.

          

  4. Myenteric Nerve PlexusContains sensory neurons that sense chemical changes in the lumen, and motor neurons (sympathetic and parasympathetic) that innervate the muscularis mucosae.

          

  5. General Organization of the Digestive TractThe epithelial lining is continuous, at the mouth and at the anus, with the external environment, it must accommodate these transitions at either end while remaining moist, it must also be very thin to accomplish both digestion and absorption, and it must handle the rapid turnover of its epithelial cells due to mechanical and chemical insults while protecting the deeper tissues against: chemical stresses corrosive effects of digestive acids and enzymes), mechanical stresses, such as abrasion, and pathogenic bacteria.

          

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