Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 23, Problem 25RQ
What is the roLe of the small intestine’s MALT?
- secreting mucus
- buffering acidic chyme
- activating pepsin
- preventing bacteria from entering the bloodstream
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Which would be most effective in shutting down protein digestion in the small
intestine?
Preventing the release of bile salts from the gall bladder
O Preventing the release of trypsinogen from pancreas
Preventing release of hydrochloric acid from parietal cells
Preventing the release of pancreatic alpha amylase
Preventing release pepsinogen from chief cells
Which structures of the small intestine secrete an alkaline mucus that neutralizes stomach acids?
O Duodenal glands
O Gastric glands
O Enteroendocrine cells
O Absorptive cells
O Paneth cells
Question 20
is considered the hardest substance of the body; it covers the crown of a tooth.
O Dentin
Enamel
O Pulp
O Gingiva
O Cement
what type of movement causes mechanical breakdown in the small intestine?
Segmentation, peristalsis, haustral contractions
Chapter 23 Solutions
Anatomy & Physiology
Ch. 23 - By clicking on this link...Ch. 23 - Visit this site...Ch. 23 - Watch this animation...Ch. 23 - Watch this animation...Ch. 23 - Watch this animation...Ch. 23 - By watching this animation...Ch. 23 - Watch this video...Ch. 23 - Which of these organs is not considered an...Ch. 23 - Which of the following organs is supported by a...Ch. 23 - Which of the following membranes covers the...
Ch. 23 - Which of these processes occurs in the mouth?...Ch. 23 - Which of these processes occurs throughout most of...Ch. 23 - Which of the following stimuli activates sensors...Ch. 23 - Which of these statements about reflexes in the GI...Ch. 23 - Which of these ingredients in saliva is...Ch. 23 - Which of these statements about the pharynx is...Ch. 23 - Which structure is located where the esophagus...Ch. 23 - Which phase of deglutition involves contraction of...Ch. 23 - Which of these cells secrete hormones? parietal...Ch. 23 - Where does the majority of chemical digestion in...Ch. 23 - During gastric emptying, chyme is released into...Ch. 23 - Parietal cells secrete ________. gastrin...Ch. 23 - In which pail of the alimentary canal does most...Ch. 23 - Which of these is most associated with villi?...Ch. 23 - What is the roLe of the small intestines MALT?...Ch. 23 - Which part of the large intestine attaches to the...Ch. 23 - Which of these statements about bile is true?...Ch. 23 - Pancreatic juice ________. deactivates bile. is...Ch. 23 - Where does the chemical digestion of starch begin?...Ch. 23 - Which of these is involved in the chemical...Ch. 23 - Where are most fat-digesting enzymes produced?...Ch. 23 - Which of these nutrients is absorbed mainly in the...Ch. 23 - Explain how the enteric nervous system supports...Ch. 23 - What layer of the alimentary canal tissue is...Ch. 23 - Offer a theory to explain why segmentation occurs...Ch. 23 - It has been several hours since you last ate....Ch. 23 - The composition of saliva varies from gland to...Ch. 23 - During a hockey game, the puck hits a player in...Ch. 23 - What prevents swallowed food from entering the...Ch. 23 - Explain the mechanism responsible for...Ch. 23 - Describe the three processes involved in the...Ch. 23 - Explain how the stomach is protected from self...Ch. 23 - Describe unique anatomical features that enable...Ch. 23 - Explain how nutrients absorbed in the small...Ch. 23 - Why is it important that chyme from the stomach is...Ch. 23 - Describe three of the differences between the...Ch. 23 - Why does the pancreas secrete some enzymes in...Ch. 23 - Describe the location of hepatocytes in the liver...Ch. 23 - Explain the role of bile salts and lecithin in the...Ch. 23 - How is vitamin B12 absorbed?
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- Figure 34.12 Which of the following statements about the small intestine is false? Absorptive cells that line the small intestine have microvilli, small projections that increase surface area and aid in the absorption of food. The inside of the small intestine has many folds, called villi. Microvilli are lined with blood vessels as well as lymphatic vessels. The inside of the small intestine is called the lumen.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_forwardFigure 16.7 Which of the following statements about the digestive system is false? a. Chyme is a mixture of food and digestive juices that is produced in the stomach. b. Food enters the large intestine before the small intestine. c. In the small intestine, chyme mixes with bile, which emulsifies fats. d. The stomach is separated from the small intestine by the pyloric sphincter.arrow_forward
- What material would normally be found moving through the lumen of the small intestine?arrow_forwardWhich of the following is not a form of intrinsic regulation of the digestive tract? Group of answer choices parasympathetic system paracrine agents such as histamine the hormone gastrin enteric nervous systemarrow_forwardWhich pair of digestive enzymes is secreted by pancreas? O lipase and lactase bile salts and trypsin O amylase and pepsin O lipase and amylasearrow_forward
- Which of the following is necessary in order to have the start of chemical digestion of proteins by pepsin in the stomach? O Secretions from mucus neck cells O Two of the listed options O Secretions from chief cells O All of the listed options O Secretions from parietal cellsarrow_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_forwardThe alimentary canal is a tube with an opening at each end and specialized regions. Match the structures of the alimentary canal to their general functions. Absorb nutrients Secrete Churn up food from the lumen enzymes Mechanically break up food Moves food Secrete along the canal hormones Epithelial cells lining the lumen Smooth musclesarrow_forward
- Which of the following is NOT a regulatory mechanism for digestion? Only carbohydrates are digested in the oral cavity. Hormones are secreted at various stages of digestion pH of the digestive tract is altered by the release of bicarbonates to the GI tract. Enzyme activation is effected by autocatalysis of zymogens. Cells and different organ systems are involved in the digestion of foodstuffs.arrow_forwardWhich of the following digestive secretions is released into the stomach? Pepsinogin Mucus O HCL All of the abovearrow_forwardWhich of the following statements concerning the large intestine is correct? Group of answer choices The ileocecal valve is the sphincter between the rectum and the anus It is responsible for the absorption of most of the water in the gastrointestinal tract The majority of nutrients are absorbed in the large intestines The mutualistic bacteria in the large intestine may provide some additional vitaminsarrow_forward
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