5 Written questions
5 Matching questions
- Chief cells
- a Occurs when materials enter digestive tract via the mouth.
- b The middle segment of the small intestine, about 8 feet one, and the site of most digestion and absorption.
- c Secrete Pepsinogen, which is converted to pepsin (a protease enzyme) that breaks down proteins by gastric acid.
- 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.
- e Deep to the mucosa, dense irregular connective tissue, and contains large blood vessels, large lymphatic vessels, and large nerves.
5 Multiple choice questions
- Movement of organic substances, ions, vitamins, and water for lumen, across the cells of epithelial lining, and into interstitial fluid (and blood vessels).
- Is either stratified or simple columnar.
- Plicae, Vili, and Microvilli.
- Four major layers: from inside to outside: mucosa, submucosa, muscularis, and serosa.
- 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
Epithelial Cells of Gastric Glands- Endocrine cells → G cells and Stem cells.
Digestion → Occurs when materials enter digestive tract via the mouth.
Functions of the Stomach → Simple columnar epithelium which invaginates to form gastric glands.
Serosa → The outer lining of the digestive tract, composed of simple squamous epithelium, and loose connective tissue.
Functions of the Small Intestine → Plays a key role in digestion and absorption of nutrients, and 90% of nutrient absorption occurs here.