Nutrition: Concepts and Controversies
14th Edition
ISBN: 9781305886865
Author: Sizer, Frances , WHITNEY, Ellie
Publisher: Cengage Learning
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Question
Chapter 5, Problem 7SC
Summary Introduction
Introduction:
Bile is produced by the liver that helps in lipid digestion in small intestine and it is green or yellowish brown color fluid.
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The salivary glands, pancreas, liver and gall bladder are considered accessory organs in the digestive system. They are not part of the digestive track but contribute to digestion.
List the accessory organ associated with each the following functions.
Produces bicarbonate to neutralize acidity as stomach contents enter the small intestine.
Stores and releases bile to aid in breakdown of fats.
Produces bile.
Produces enzymes that enter the small intestine and aid in digestion.
Moistens food
Produces salivary amylase
Produces hormones that regulate blood glucose levels.
Stores glucose as glycogen (a polysaccharide)
Which of the following statements is TRUE?
Hydrochloric acid makes an acidic environment in the stomach that promotes promotes polysaccharide digestion.
Lipase, produced by the pancreas, digests the emulsified fats into fatty acids.
Bile, synthesized by the liver and stored in the gall bladder, digests fats which will then be absorbed in the small intestine
The acidic environment converts the inactive pepsin into its active form: pepsinogen. Pepsinogen digests proteins in the stomach.
Which one of the following features does NOT make HDL a 'good' lipoprotein.
It acts as an apolipoprotein reservoir.
It transfers cholesterol from VLDL and LDL into the liver.
It picks up cholesterol from extra-hepatic tissues and brings it back to the liver.
It acts as a cholesterol store for tissues that need cholesterol to function.
Chapter 5 Solutions
Nutrition: Concepts and Controversies
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- Digestion is completed and products are absorbed in the _________. a. mouth b. stomach c. small intestine d. large intestinearrow_forwardFigure 34.11 Which of the following statements about the digestive system is false? Chyme is a mixture of food and digestive juices that is produced in the stomach. Food enters the large intestine before the small intestine. In the small intestine, chyme mixes with bile, which emulsifies fats. The stomach is separated from the small intestine by the pylloric sphincter.arrow_forwardFigure 34.19 Which of the following statements about digestive processes is true? Amylase, maltaseT and lactase in the mouth digest carbohydrates. Trypsin and lipase in the stomach digest protein. Bile emulsifies lipids in the small intestine. No food is absorbed until the small intestine.arrow_forward
- Bile has a role in _________ digestion and absorption. a. carbohydrate c. protein b. fat d. amino acidarrow_forwardWhich of the following statements is wrong? Bile is synthesized from cholesterol. Bile is synthesized by liver . Bile is released in the small intestine. Bile dissolves proteins in water for digestion . Bile is stored in the Gallbladder .arrow_forwardThe ingestion of a meal high in fat would cause which of the following to occur? bile would be released to emulsify the fat severe indigestion caused by lack of sufficient digestive enzymes the acidic secretions of the stomach would be sufficient to completely digest the foodarrow_forward
- Which of the following is NOT true regarding the absorption of fat-soluble vitamins? Absorption occurs in the small intestine. Fat-soluble vitamins are incorporated into chylomicrons and transported into the lymph. A low-fat meal has no effect on fat-soluble vitamin absorption. Bile is necessary.arrow_forwardBecause bile salts are important lipolytic enzymes, fat digestion relies on which of the following accessory organs? Small intestine Pancreas Liver Salivary glandsarrow_forwardWhich of the following is not one of the major functions of the liver? produce bile salts to emulsify fats break down old red blood cells produce blood plasma proteins like albumin and fibrinogen maintain blood glucose levels through the release of insulin and glucagon produce urea from amino acids and ammoniaarrow_forward
- Organ where digestion of proteins, fats, and carbohydrates is completed. Gland that secretes digestive juices. Organ that produces bile for digestion and processes vitamins and lipids. Exit point for waste material. Saclike organ containing acidic digestive juices. Tubular organ that connects the mouth to the stomach. Reabsorbs water from undigested material and processes waste matter. Small intestine, Liver, Pancreas, Esophagus, Anus, Stomach, Large intestinearrow_forwardWhich of the following statements regarding digestive systems are correct? Glucose monomers are linked together by alpha 1-4 glycosidic bonds in both starch and cellulose. Gastrin is produced by exocrine cells of the gastric glands. Pepsinogen and gastric acid (HCl) are both secreted into the lumen of the stomach.arrow_forwardWhich of the following statements is not correct: stomach cells are protected from the acid by mucus digestive enzymes arrive into the duodenum through a duct coming from the accessory organs sphincters allow food to quickly travel through the digestive tract.. lipids are absorbed into the lymphatic capillaries known as lactealsarrow_forward
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