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AP - Digestive Syst.

Chapter 17 - Hole's Anatomy and Physiology

What organs are included in the alimentary canal? mouth pharynx esophagus stomach small intestine large intestine anal canal
What organs are included in the accessory organs? salivary glands liver gallbladder pancreas
What is the outer layer of the alimentary canal? serosa
What does the serosa secrete? serous fluid
List the wall layers of the alimentary canal starting from the innermost tissue. 1) mucosa 2) submucosa 3)muscularis externa or muscularis 4)serosa
Where are the palatine tonsils located? back of mouth, on either side of tongue and help protect against infections; inflamed - tonsillitis
Serous cells secrete what digestive enzyme in the mouth? salivary amylase
*Match the enzyme(s) with its (their) function(s). Functions may be used more than once. 1)peptidase 2)amylase 3)nuclease 4)lipase 5)pepsin 6)trypsin 7)carboxypeptidase 8)sucrase, maltase lactase 1 2 D 3 4 5 A 6 7 8
*A begins protein digestion B breaks fat into fatty acids + glycerol C proteins into peptides D breaks down starch and glycogen into disaccha E breaks down peptides into AA F breaks down nucleic acids into nucleosides G disaccha. into monosaccha.
pepsinogen is activated by what to produce pepsin? HCl
What are the small openings in the stomach's inner membrane? gastric pits
What do chief cells secrete? pepsinogen
Parietal cells secrete? HCl
What is required for the absorption of Vitamin B12 and are the parietal cells of the gastric gland? intrinsic factor
What hormone inhibits acid secretion in the stomach? somatostatin
What does the hormone gastrin do? increases the secretory activity of gastric glands
Gastrin promotes the release of what hormone to stimulate additional gastric secretions? histamine
List three phases of gastric secretion and briefly describe each 1) Cephalic - thought, smell, taste, sight triggers gastric juices 2) Gastric- goes into stomach 3) Enteric - food entering small intestine
peptide hormone in upper small intestine responsible for stimulating the digestion of proteins and fats cholecystokinin CCK
Created by: spham



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