Pearson eText Fundamentals of Anatomy & Physiology -- Instant Access (Pearson+)
11th Edition
ISBN: 9780136874089
Author: Frederic Martini, Judi Nath
Publisher: PEARSON+
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Chapter 24, Problem 24RQ
Summary Introduction
Introduction:
The hormones released by the duodenum are essential for the chemical degradation of the complex food that is being consumed by the body. These hormones are secreted only when stimulated by certain change in the environment
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Gastric acid
a) The enzymatic activity of carbonic anhydrase is necessary for gastric parietal cells to secrete both HCl and HCO3-.
b) Gastroesophageal reflux disease (GERD) occurs when the pyloric sphincter relaxes, allowing stomach acid to enter the esophagus.
c) The H+/K+-ATPase pump located on the basolateral surface of gastric parietal cells.
d) Both (a) and (b) are correct and (c) is incorrect
e) Statements (a), (b) and (c) are all correct
Chapter 24 Solutions
Pearson eText Fundamentals of Anatomy & Physiology -- Instant Access (Pearson+)
Ch. 24 - Prob. 1CPCh. 24 - Prob. 2CPCh. 24 - Prob. 3CPCh. 24 - Prob. 4CPCh. 24 - Name the layers of the gastrointestinal tract...Ch. 24 - Which is more efficient in propelling intestinal...Ch. 24 - Prob. 7CPCh. 24 - Prob. 8CPCh. 24 - Prob. 9CPCh. 24 - Prob. 10CP
Ch. 24 - Prob. 11CPCh. 24 - Prob. 12CPCh. 24 - Prob. 13CPCh. 24 - Name the structure connecting the pharynx to the...Ch. 24 - Prob. 15CPCh. 24 - Identify the muscles associated with the pharynx...Ch. 24 - What is occurring when the soft palate and larynx...Ch. 24 - Name the four major regions of the stomach.Ch. 24 - Prob. 19CPCh. 24 - Prob. 20CPCh. 24 - Prob. 21CPCh. 24 - The digestion of which nutrient would be most...Ch. 24 - Prob. 23CPCh. 24 - Prob. 24CPCh. 24 - Name the three regions of the small intestine from...Ch. 24 - Prob. 26CPCh. 24 - Prob. 27CPCh. 24 - How would the pH of the intestinal contents be...Ch. 24 - Prob. 29CPCh. 24 - Name some major histological differences between...Ch. 24 - Prob. 31CPCh. 24 - Prob. 32CPCh. 24 - Prob. 33CPCh. 24 - Prob. 34CPCh. 24 - Prob. 35CPCh. 24 - Prob. 36CPCh. 24 - Prob. 37CPCh. 24 - What body systems may be affected by inadequate...Ch. 24 - The enzymatic breakdown of large molecules into...Ch. 24 - Prob. 2RQCh. 24 - Prob. 3RQCh. 24 - Prob. 4RQCh. 24 - Prob. 5RQCh. 24 - Prob. 6RQCh. 24 - Prob. 7RQCh. 24 - Prob. 8RQCh. 24 - Prob. 9RQCh. 24 - Prob. 10RQCh. 24 - Prob. 11RQCh. 24 - Prob. 12RQCh. 24 - Prob. 13RQCh. 24 - Prob. 14RQCh. 24 - Prob. 15RQCh. 24 - What three basic mechanisms regulate the...Ch. 24 - Prob. 17RQCh. 24 - What are the primary digestive functions of the...Ch. 24 - Prob. 19RQCh. 24 - What are the three primary functions of the large...Ch. 24 - What two positive feedback loops are involved in...Ch. 24 - Prob. 22RQCh. 24 - Prob. 23RQCh. 24 - Prob. 24RQCh. 24 - Through which layers of a molar would an oral...Ch. 24 - Prob. 26RQCh. 24 - Prob. 27RQCh. 24 - Prob. 28RQCh. 24 - Some people with gallstones develop pancreatitis....Ch. 24 - Prob. 30RQCh. 24 - A condition known as lactose intolerance is...Ch. 24 - Prob. 32RQCh. 24 - Prob. 1CCCh. 24 - Prob. 2CC
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- The secretion that lubricates the food so that it is more easily passed through the gastrointestinal tract, and which also protects the epithelium is called ... a) ... mukus. b) ...water c) ... CCK. d) ... intrinsic factor. e) ... secretarrow_forwardExcessive vomiting can to lead to alkalosis, as the gastric glands get more active to replace the gastric juice lost from the stomach lumen. Select ALL of the following that will occur to compensate for this alkalosis (ie, to keep pH stable): a). breathing rate goes down b). kidneys make less HCO3- for blood c). kidneys secrete less H+ d). hyperventilationarrow_forwardWhich of the following does NOT stimulate acid production in the stomach? A) Acetylcholine B) Intrinsic factor C ) Histaminearrow_forward
- 38) The hormone cholycystokinin (CCK) is secreted by epithelial cells of the duodenum primarily in response to………, stimulating the …………. a. fatty chyme…. stimulating the liver to increase bicarbonate productionb. fatty chyme….stimulating the gall bladder to contract, releasing concentrated bilec. acid chyme…..stimulating the gall bladder to release bicarbonated. acid chyme…..stimulating the liver to release lipasee. options a) and c) are both correctarrow_forward2) Which Statement is not correct regarding cholecystokinin? a) secrete by enteroendocrine cells of small intestine b) Fat and protein in duodenum stimulate its secretion c) stimulate release of bile from gallbladder d) increase motility of stomacharrow_forwardEvery day, about 9 l of water comes to the gastrointestinal tract. What proportion of the water has been reabsorbed when the intestinal contents reach the rectum? a) 50% b) 99% c) 1% d) 85% e) 10%arrow_forward
- Name the gastric cells that secrete hydrochloric acid.arrow_forwardHow does the duodenum protect itself from acid? A) All these answers are correct B) It neutralizes the acid With pancreatic juice and bile C) It doesn’t require protection as the duodenum is adapted to the presence of acid D) It neutralizes acid with pancreatic juice E) It neutralizes acid with bilearrow_forwardGastric juice acidity is increased in a patient. Answer the questions A and B:A) How and why will the amount and composition of pancreatic juice be changed under these conditions?B) Which receptors are located on the parietal cells and how can they be blocked with aim of normalization gastric juice acidity?arrow_forward
- Which cell type occurs in the stomach mucosa, has three prongs, contains many mitochondria and many microvilli, and pumps hydrogen ions? (a) absorptive enteroyte, (b) parietal cell, (c) mucussecreting cell, (d) chief cell, (e) mucous neck cell.arrow_forwardPlease help in answering this question - more than one answer may be correct: Suppose a person has a severely damaged pancreas. What problems might such a person have? A) A complete inability to raise metabolic rate B) Reduced ability to lower blood glucose concentration C) Reduced ability of raise blood glucose concentration D) May have an increased risk of duodenal ulcers due to low pH material being passed to the small intestine E) Reduced ability to digest lipidsarrow_forwardIf the food that reaches the duodenum (duodenum) has a pH of approx. 1, which substance is most likely to be released by the epithelial cells? a) CCK that stimulates acid secretion b) Bile salts that stimulate acid secretion c) Histamine which inhibits acid secretion d) Secretin that inhibits acid secretionarrow_forward
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