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 32RQ
Which of these nutrients is absorbed mainly in the duodenum?
- glucose
- iron
- sodium
- water
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Which of these nutrients is absorbed mainly in the duodenum?a. glucoseb. ironc. sodiumd. water
The duodenum is important for
Absorbing nutrient molecules produced by enzymes
Releasing acid into the chyme mixture
Repetitive neutralization of highly acidic chyme by pancreatic HCO3-
The storage of bile acids
The stomach is able to distend a great deal as it receives food because of all of the following, except
sympathetic stimulation decreases the tonus of the gastric smooth muscle.
there is a great deal of loose tissue in the form of rugae.
the gastric smooth muscle is very extensible.
the smooth muscle of the stomach is very elastic.
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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- The lack of adequate saliva due to the absence of or diminished secretions by the salivary glands is known as zerostomia. _____________________arrow_forwardThe regulation of the gastrointestinal response is done via which of the following? Hormonal interactions Neural interactions Hormonal and neural interactions Neural and electrical interactionsarrow_forwardWhich of the following leads to a decrease in gastric emptying? increased parasympathetic efferent stimulation increased distention of duodenum increased pH in the duodenum decreased secretion of enterogastronesarrow_forward
- Which of the following happens when the parasympathetic defecation reflex is initiated? relaxation of the external anal sphincter relaxation of the rectum relaxation of the internal anal sphincter relaxation of the sigmoid colonarrow_forwardAnatomy and physiologyarrow_forwardThe Pancreatic fluid in the duodenum help break down carbohydrates. True Falsearrow_forward
- 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 cellsarrow_forwardWrite an account of the regulation of acid production by neural and hormonal mechanisms during the gastric phase (Figure 1). enteric distension activatas noural roflexes neurons HCI acetylcholine food in stomach parietal cell buffers histarnine açid increases pH to prevent stimulation of somatostatin ECL cell somatostatin secretion somatostatin- releasing cell gastrin G cell peptidesarrow_forwardWhich nutrient is responsible for helping the movement of substances through the digestive system, and for helping to maintain consistent bowel movements? Vitamin C O Proteins O Iron O Fiberarrow_forward
- The exocrine cells of the pancreas secrete pancreatic enzymes and hydrochloric acid bile salt bicarbonate somatostatinarrow_forwardDuring the cephalic phase of gastric stimulation, all of the following occur EXCEPT, Gastrin is secreted into the gastric lumen Parasympathetic stimulation of secretory cells in the gastric mucosa occurs Seeing, smelling, or tasting food reflexly increase gastric acid secretion O Pepsinogen is secreted into the gastric lumenarrow_forwardWhich of the following are absorbed into epithelial cells of the intestinal villi, but not into the blood? Amino Acids Dipeptides Tripeptides Both dipeptides and Tripeptides Amino Acids and Tripeptidesarrow_forward
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