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5 Written questions

5 Matching questions

  1. Submucosa
  2. Chief cells
  3. Jejunum
  4. Peristalsis
  5. Ingestion
  1. a Occurs when materials enter digestive tract via the mouth.
  2. b The middle segment of the small intestine, about 8 feet one, and the site of most digestion and absorption.
  3. c Secrete Pepsinogen, which is converted to pepsin (a protease enzyme) that breaks down proteins by gastric acid.
  4. d Waves of muscular contractions that moves a bolus along the length of the digestive tract. Circular smooth muscle layer behind bolus, longitudinal smooth muscle layer ahead of boys contracts: shortening adjacent segments, and wave of contraction in circular muscles: forces bolus forward.
  5. e Deep to the mucosa, dense irregular connective tissue, and contains large blood vessels, large lymphatic vessels, and large nerves.

5 Multiple choice questions

  1. Movement of organic substances, ions, vitamins, and water for lumen, across the cells of epithelial lining, and into interstitial fluid (and blood vessels).
  2. Is either stratified or simple columnar.
  3. Plicae, Vili, and Microvilli.
  4. Four major layers: from inside to outside: mucosa, submucosa, muscularis, and serosa.
  5. 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.

5 True/False questions

  1. Epithelial Cells of Gastric Glands- Endocrine cellsG cells and Stem cells.

          

  2. DigestionOccurs when materials enter digestive tract via the mouth.

          

  3. Functions of the StomachSimple columnar epithelium which invaginates to form gastric glands.

          

  4. SerosaThe outer lining of the digestive tract, composed of simple squamous epithelium, and loose connective tissue.

          

  5. Functions of the Small IntestinePlays a key role in digestion and absorption of nutrients, and 90% of nutrient absorption occurs here.

          

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