Final Exam Review.docx

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Biological Sciences Program
BSCI 201
Justicia Opoku

Final Exam Review 5x8 inch note card Controls of the Digestive System Movement of materials along the digestive tract is controlled by Neural mechanisms Parasympathetic and local reflexes Stretch receptors Water helps you feel full because it stretches your stomach. Breakdown products: Helps a person full. Hormonal mechanisms Enhance or inhibit smooth muscle contractions Local mechanisms Coordinates response to changes in pH or chemical stimuli Fruit Juices or Soda’s (make you eat more because of the acidic nature) Hormones and Hormonal Control Any hormone that is discussed is fair game Histamine:Activates Parietal Cells to secrete hydrochloric acid. Histamine in digestive system. Can be affected byAnti-histamines Somatostatin Soma – Body Statin – to stay still Slows the release of gastric juices or pancreatic juices Helps you feel full longer Slows the release food moving into the small intestine to allow full digestion. Doesn’t only stop food release. Secretin and Cholecystokinin inhibit gastrin release GIP: inhibits release of gastric juices VIP – Vasoactive Intestinal Peptide Increase blood flow to the GI Tract. (Vasodilation) People can feel cold because blood flow is in GI tract but
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