HUMAN BIOLOGY (LL) + CONNECT ACCESS
16th Edition
ISBN: 9781264019632
Author: Mader
Publisher: MCG
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Textbook Question
Chapter 9.3, Problem 2BTH
Considering that the GI tract consists of layers of muscles (see Fig. 9.2), why might exercise help control GERD?
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Considering that the GI tract consists of layers of muscles (see Fig. 9.2), why might exercise help control GERD?
How does gastrointestinal tract evade dehydration?
1)
Alternating wave-like contraction and relaxatio of the oral (mouth) muscles reabsorbs water which will be transported to the urinary system
2) water is an important digestive enzyme in the stomach.
3) Normal peristaltic movements in the large intestine ensure reabsorption of water that will be delivered to the circulatory system.
4) the water we drink will be mostly absord by the blood vessels attached to the esophagus and stomach.
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Where along the GI tract is the muscularis composed of skeletal muscle? Is control of this skeletal muscle voluntary or involuntary?
Chapter 9 Solutions
HUMAN BIOLOGY (LL) + CONNECT ACCESS
Ch. 9.1 - State the function of each organ of the...Ch. 9.1 - Prob. 2LOCh. 9.1 - Prob. 3LOCh. 9.1 - Prob. 1CYPCh. 9.1 - Prob. 2CYPCh. 9.1 - Prob. 3CYPCh. 9.2 - 1. Identity the structures of the mouth, pharynx,...Ch. 9.2 - Prob. 2LOCh. 9.2 - Prob. 3LOCh. 9.2 - Prob. 1CYP
Ch. 9.2 - Prob. 2CYPCh. 9.2 - Prob. 3CYPCh. 9.3 - Prob. 1LOCh. 9.3 - Prob. 2LOCh. 9.3 - Prob. 3LOCh. 9.3 - Prob. 1BTHCh. 9.3 - Considering that the GI tract consists of layers...Ch. 9.3 - Prob. 1CYPCh. 9.3 - Prob. 2CYPCh. 9.3 - Summarize the differences in how carbohydrates,...Ch. 9.4 - Prob. 1LOCh. 9.4 - Prob. 2LOCh. 9.4 - Prob. 3LOCh. 9.4 - Prob. 1CYPCh. 9.4 - Prob. 2CYPCh. 9.4 - Prob. 3CYPCh. 9.5 - Describe the structure and function of the large...Ch. 9.5 - Prob. 2LOCh. 9.5 - Prob. 1BTHCh. 9.5 - What factors might regulate how long the PillCam...Ch. 9.5 - Prob. 1CYPCh. 9.5 - Prob. 2CYPCh. 9.5 - Prob. 3CYPCh. 9.6 - Prob. 1LOCh. 9.6 - Prob. 2LOCh. 9.6 - What aspects of our society encourage the...Ch. 9.6 - Prob. 1.2BTHCh. 9.6 - Prob. 2.1BTHCh. 9.6 - Prob. 2.2BTHCh. 9.6 - Prob. 3.1BTHCh. 9.6 - Prob. 3.2BTHCh. 9.6 - Prob. 1CYPCh. 9.6 - Prob. 2CYPCh. 9.6 - Prob. 3CYPCh. 9 - Prob. 1ACh. 9 - Prob. 2ACh. 9 - Prob. 3ACh. 9 - Prob. 4ACh. 9 - Prob. 5ACh. 9 - Prob. 6ACh. 9 - Prob. 7ACh. 9 - Prob. 8ACh. 9 - Prob. 9ACh. 9 - Prob. 10ACh. 9 - Prob. 11ACh. 9 - Prob. 12ACh. 9 - Prob. 13ACh. 9 - Prob. 14ACh. 9 - Prob. 15ACh. 9 - A BMI of 26.7 indicates that a person is healthy....Ch. 9 - Prob. 17ACh. 9 - Prob. 18ACh. 9 - Trace all of the types and locations of enzymes...Ch. 9 - Prob. 2TC
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- 1.) Enumerate the phases of digestion and give the significance of each. 2.) What is the importance of an abundance of mucus along the GIT? 3.) Explain the importance of high fiber diet in relation to digestion.arrow_forwardIdentify the incorrect statement about the GI tract: (A) the stomach has three layers of smooth muscle (B) the esophagus contains both skletal and smooth muscle (C) transit time can be tested with a sitzmarker test (D) if the pyloric sphinter is open, this can lead to heartburnarrow_forwardExplain the basics of how bowel movements occur, i.e. smooth muscles that contract and relax, that the contractions partly push the food forward, partly mix the food so that enzymes etc. are better able to break it down. Describe the role that sphincters play in regulating how fast the content is advanced.arrow_forward
- Why does the passage of polypeptides and small proteins across the intestinal wall is uncommon in adults?arrow_forwardWhen sensors in the GI tract are stimulated, they respond via reflexes. What types of digestive activity may be put into motion via those reflexes?arrow_forwardDescribe two different ways that gastrin secretion is stimulated during the gastric phase of the response to a meal.arrow_forward
- Why does it take hours for mass peristalsis to fill the rectum up after an individual voluntarily inhibits defecation?arrow_forwardThe inflammatory bowel disease ulcerative colitis is thought to be a result of a breakdown of the mucus barriers within the intestine due to reduced mucus production. Therefore, in ulcerative colitis patients you would expect to observe a decrease in the amount of: 1) goblet cells 2) circular muscle 3) submucosa 4) serosaarrow_forwardWhich layer(s) of the GI tract is/are made up predominately of connective tissue?arrow_forward
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