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 15RQ
Which of these ingredients in saliva is responsible for activating salivary amylase?
- mucus
- phosphate ions
- chloride ions
- urea
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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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- Parietal cells acidify the stomach contents while maintaining a neutral cytosolic pH by: exporting "excess" cytosolic OH as HCO3 exchanging HCO3- for CI O preserving electroneutrality by accompanying the movement of each CI ion into the stomach lumen by a K+ O All of the other are correctarrow_forwardOn the histologic section of the glands stomach's fundus, relatively large electron-microscopically cells with acidophilic cytoplasm can be seen, and in these cells there is a complicated system of intracellular tubules. What component of gastric juice is formed due to the activity of these cells? Serotonin Mucus Gastrin O Hydrochloric acid Opepsinogenarrow_forwardAnatomy and physiologyarrow_forward
- Write 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_forwardThe 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 acidsarrow_forwardWhich of the following digestive secretion is not an enzyme? amylase mucus pepsin maltasearrow_forward
- The exocrine cells of the pancreas secrete pancreatic enzymes and hydrochloric acid bile salt bicarbonate somatostatinarrow_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_forwardA patient is brought to the emergency department due to acute pain, nausea, and vomiting. Computed tomography indicates acute pancreatitis that leads to an increased activation of trypsin. Which of the following is most likely activated in this condition? Pancreatic lipase Lysophospholipase Gastric lipase Colipasearrow_forward
- Amino acids are absorbed Into the Intestinal cell by: O Dissolving through the lipid cell membrane OCountertransport of Na Cotransport of Na- O Faci itated d'ffusion OPrimary active transportarrow_forwardBecause bile salts are important lipolytic enzymes, fat digestion relies on which of the following accessory organs? Small intestine Pancreas Liver Salivary glandsarrow_forwardComing from the acid pH of the stomach which pH level does the chyme find when it enters the duodenum? Why is it necessary to maintain that pH level in the small intestine? What are the organs responsible for that pH level and how is it kept?arrow_forward
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