Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 18, Problem 13RA
Which of these statements about starch digestion is false?
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Which of the following statements about starch digestion is FALSE?
a. It begins in the mouth.
b. It occurs in the stomach.
c. It requires the action of pancreatic amylase
d. It requires brush border enzymes for completion
Which of the following is true about carbohydrate digestion?
A.
Cellulose and lignin found in plants are totally indigestible even with intestinal bacteria.
B.
The acidity of the stomach prevents chemical digestion of carbohydrates.
C.
Dextrin and maltose are the products of chemical digestion of starch by pancreatic amylase.
D.
Disaccharidases produced from the pancreas breaks down oligosaccharides in the intestines.
It is occasionally necessary for a person to have their gallbladder surgically removed. How will such a person's digestive process be altered?
A.
Pepsinogen would not be converted into pepsin before entering the lumen of the stomach.
B.
The person would be unable to digest fats.
C.
Mucus would not protect the stomach lining.
D.
Water would not be extracted from forming feces.
E.
Bile would go directly from the liver to the duodenum.
Chapter 18 Solutions
Human Physiology
Ch. 18 - Prob. 1aCPCh. 18 - Describe the structure and function of the mucosa,...Ch. 18 - Prob. 2bCPCh. 18 - Describe the structure and function of the lower...Ch. 18 - Prob. 3bCPCh. 18 - Prob. 4aCPCh. 18 - Explain how peptic ulcers are produced and why...Ch. 18 - Explain how gastrin and vagus nerve stimulation...Ch. 18 - Describe the adaptations of the small intestine...Ch. 18 - Prob. 6CP
Ch. 18 - Prob. 7CPCh. 18 - Prob. 8aCPCh. 18 - Prob. 8bCPCh. 18 - Prob. 9CPCh. 18 - Prob. 10aCPCh. 18 - Prob. 10bCPCh. 18 - Prob. 10cCPCh. 18 - Prob. 11aCPCh. 18 - Prob. 11bCPCh. 18 - Prob. 12CPCh. 18 - Prob. 13aCPCh. 18 - Describe the mechanisms involved in the intestinal...Ch. 18 - Prob. 14CPCh. 18 - Prob. 15CPCh. 18 - Prob. 16aCPCh. 18 - List each enzyme involved in protein digestion....Ch. 18 - Describe how bile aids both the digestion and...Ch. 18 - Trace the pathway and fate of a molecule of...Ch. 18 - Prob. 17cCPCh. 18 - Which of these statements about intrinsic factor...Ch. 18 - Prob. 2RACh. 18 - Which of these statements about gastric secretion...Ch. 18 - Prob. 4RACh. 18 - Which of these statements about trypsin is...Ch. 18 - Prob. 6RACh. 18 - Prob. 7RACh. 18 - The first organ to receive the blood-borne...Ch. 18 - Prob. 9RACh. 18 - Prob. 10RACh. 18 - Prob. 11RACh. 18 - Which of these statements about vitamin is...Ch. 18 - Which of these statements about starch digestion...Ch. 18 - Prob. 14RACh. 18 - Which of these statements about contraction of...Ch. 18 - Prob. 16RACh. 18 - Prob. 17RACh. 18 - Which of the following statements about the liver...Ch. 18 - Prob. 19RACh. 18 - Prob. 20RACh. 18 - Prob. 21RACh. 18 - Describe the mechanisms that are believed to...Ch. 18 - Prob. 23RACh. 18 - Explain how jaundice is produced when (a) the...Ch. 18 - Prob. 25RACh. 18 - Distinguish between chylomicrons, very-low-density...Ch. 18 - Prob. 27RACh. 18 - Trace the course of blood flow through the liver...Ch. 18 - Prob. 29RACh. 18 - Describe the reflexes controlling the stomach,...Ch. 18 - Prob. 31RACh. 18 - Prob. 32RACh. 18 - Prob. 33RACh. 18 - Prob. 34RACh. 18 - Prob. 35RACh. 18 - Prob. 36RACh. 18 - Prob. 37RACh. 18 - Prob. 38RACh. 18 - Prob. 39RACh. 18 - Prob. 40RACh. 18 - Refer to figure 18. I 4 to answer the following...Ch. 18 - Prob. 42RACh. 18 - Prob. 43RA
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- Explain the differences between the digestion roles of the small and large intestines. Does the appendix also have a digestive function?arrow_forwardWhich of the following is true regarding digestion? A. The first segment of the alimentary tract is the duodenum. B. Amylase hydrolyzes starches into simple sugars. C. Bile hydrolyzes amylase into simple sugars. D. Trypsin and chymotrypsin degrade lipids into free fatty acids. E. All of the above answer choices correctly answer the question.arrow_forwardWhich two hormones promote the release of bile and pancreatic juice into the small intestine? A. Secretin and cholesytokinin (CCK) B. Gastric inhibitory peptide (GIP) and histamine C. Somatostatin and secretin D. Gastrin and histamine Which of the following statements about starch digestion is FALSE? A. It begins in the mouth. B. It occurs in the stomach. C. It requires the action of pancreatic amylase D. It requires brush border enzymes for completion. . Which of the following statements about contraction of intestinal smooth muscle is TRUE? A. It occurs automatically. It is increased by parasympathetic nerve stimulation C. It produces segmentation D. All of the above are TRUE В.arrow_forward
- Which of the following is an unregulated process in the digestive tract? a. secretion of cholecystokinin (CCK) by the duodenal mucosa b. absorption of amino acids across the epithelium of the small intestine c. release of bicarbonate ion (HCO3–) by pancreatic duct cells d. peristalsis in the stomacharrow_forwardBrunner's glands secrete an alkaline product that helps achieve optimal pH for the activity of pancreatic enzymes. Where are these glands located? A. At the base of villi throughout the small intestine B. In the epithelium of the ampulla of Vater C. In the mucosa and submucosa of the jejunum D. In the submucosa of the duodenum E. In the submucosa of the ileumarrow_forwardwhich of the following is true of bile? a. needed in the small intestine for the digestion of fats b. needed in the small intestine for the emulsification of fats c. synthesized by the gall bladder d. it converts inactive pancreatic enzymes to an active formarrow_forward
- Which of the following statements about gastric secretion of HCl is FALSE? a. HCl is secreted by parietal cells b. HCl hydrolyzes peptide bonds c. HCl is needed for the conversion of pepsinogen to pepsin d. HCl is needed for maximum activity of pepsinarrow_forwardWhich of the following statements regarding protein digestion is incorrect? A. The intestinal enzymes trypsin and chymotrypsin continue the chemical breakdown of polypeptides into oligopeptides. B. Chemical digestion of proteins is initiated in the stomach through the action of the enzyme pepsin. C. Mechanical digestion of proteins starts in the mouth through chewing. D. Di- and tripeptides enter the intestinal cells where they are broken down by peptidases into individual amino acids.arrow_forwardThere are two different kinds of secretions associated with the digestive system that needs to be understood to avoid confusion when describing how the digestive system functions. Which one of these secretions will be involved in the control of digestion through the blood? A.Endocrine B.Exocrinearrow_forward
- Which of the following function below is not performed by the liver? a. deamination of amino acids to form keto acids b. production of glucagon c. conversion of non-carbohydrate molecules to glucose d. synthesis of lipoproteins to transport fatty acidsarrow_forwardWhat can you expect to happen to your digestive system as you age?a. Tooth decay may increase due to thinning enamel and receding gingiva.b. Even though appetite is likely to be reduced, weight gain can be anticipated.c. Constipation is more likely.d. Diarrhea is more likely.e. Pernicious anemia is more likely due to the increased production of intrinsic factor.arrow_forward
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