594 UNIT 29 1 Physology of the Digestive System partially digested food mixed wi

Question

594 UNIT 29 1 Physology of the Digestive System partially digested food mixed with gastric juices leaves the stomach as 6. After large fat particles are broken into smaller fat drop hydrolyzes each lets, the enzyme fat droplet into its building blocks and 4. Two protein-digesting pancreatic enzymes , hydrolyze polypeptides and large polypeptides into 5. Next, the brush border enzymes break the smaller polypeptides into their building blocks, , which enter a PhysioEx EXERCISE 8 bed in the Chemical and Physical Processes of Digestion Amino acids are transported via the superior mesenteric vein to the vein to the 6. The PhysioEx 9.1 Laboratory Simulations in Physiology are easy-to-use laboratory simulations that can be used as an al- ternative to or as a supplement to wet lab activities in this unit. Each simulation allows you to investigate important C. Lipid Digestion and Absorption 1. Ingested fats, like carbohydrates and proteins, undergo physiological concepts, repeat labs as often as you like, and mechanical digestion in the oral cavity. Mastication and mixing of the food forms a again undergoes further mechanical digestion in the conduct experiments that are difficult to perform in a wet lab environment because of time, cost, or safety concerns which Access the simulations in these activities at MasteringA&P;>Study Area PhysioEx 9. 2. Significant chemical digestion of fats does not occur unti enters the duodenum, triggering the release of -containing fat from intestinal cells This hormone targets gallbladder, causing it to contract and release stored in the , which is produced by the 3. Identify the liver and the gallbladder on an anatomical model and describe the location of the gallbladder using three directional terms. Bile exits the gallbladder via the which fuses with the form the Identify these ducts on an anatomical model. 4. to There you will find the following activities: PEx Activity 1: Assessing Starch Digestion by Salivary Amylase PEx Activity 2: Exploring Amylase Substrate Specificity PEx Activity 3: Assessing Pepsin Digestion of Protein PEx Activity 4: Assessing Lipase Digestion of Fat 5. The duct empties into Bile breaks large par- ticles of fat into smaller fat droplets in a process called

Explanation / Answer

ANS 3) Partially digested food mixed with gastric juices leaves the stomach as chyme.

ANS 4) Two protein digesting pancreatic enzymes endopeptides and exopeptides hydrolyse polypeptides into amino acids polypeptides.

ANS 5) Next, the brush border enzymes pepsin break the smaller polypeptides into their building blocks amino acids which enter a stomach bed in the small intestine

ANS 6) Amino acids are transported via the superior mesenteric vien to the hepatic portal vien  to the inferior mesenteric vien.

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C Lipid digestion and absorption

ANS 1) Ingested fats like carbohydrates and proteins undergo mechanical digestion in the oral cavity. Mastication and mixing of the food forms a bolus which again undergoes further mechanical digestion in the stomach.

ANS 2) Significant chemical digestion of fats does not occur until bile containing fat enters the deodenum triggerring the release of secretin from intestial cells. This hormone targets common bile duct in the gall bladder causing it to contract and release stored bile which is produced by the digestive tract.

ANS 3) Identify the liver and the gall bladder on an anatomical model and describe the location of the gallbladder using three directional terms   secreted by the liver then transported to the duodenum the first part of the small intestine.

ANS 4) Bile exists the gall bladder via the bile duct which fuses with the cystic duct to form the common bile duct. Identify these ducts on an anatomical model.

ANS 5) The common bile duct empties into the small intestine . Bile breaks large particles of fat into smaller fat droplets in a process called emulsification.

ANS 6) After large fat particles are broken into smaller fat droplets, the enzyme amylase hydrolyzes each fat droplet into its building blocks fatty acids and glycerol.

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