Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 21, Problem 7RQ
What purposes does motility serve in the gastrointestinal tract? Which types of tissue contribute to gut motility? Which types of contraction do the tissues undergo?
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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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Match the following layer to their functions:
1. submucosa 2. serosa 3. lamina propria 4. muscularis mucosa 5. muscularis and subserosa
a) it has similar function with visceral peritoneum b) peristalsis c) gastric juice production d) expels g.j. e) it connects muscle to epithelium layer
How does the structure of the intestinal mucosa maximize surface area?
Chapter 21 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 21.1 - Prob. 1CCCh. 21.1 - Prob. 2CCCh. 21.1 - Prob. 3CCCh. 21.2 - Define digestion. What is the difference between...Ch. 21.2 - Prob. 5CCCh. 21.2 - Draw a cell showing (1) an enzyme in a cytoplasmic...Ch. 21.2 - Prob. 7CCCh. 21.2 - Prob. 8CCCh. 21.2 - Prob. 9CCCh. 21.3 - Prob. 10CC
Ch. 21.4 - Prob. 11CCCh. 21.6 - Do bile salts digest triglycerides into...Ch. 21.6 - Prob. 13CCCh. 21.6 - Prob. 14CCCh. 21.6 - What activates pepsinogen, trypsinogen, and...Ch. 21.6 - Prob. 16CCCh. 21 - Match each of the following descriptions with the...Ch. 21 - Prob. 2RQCh. 21 - Prob. 3RQCh. 21 - Prob. 4RQCh. 21 - Prob. 5RQCh. 21 - Prob. 6RQCh. 21 - What purposes does motility serve in the...Ch. 21 - Prob. 8RQCh. 21 - Match each of the following cells with the...Ch. 21 - Prob. 10RQCh. 21 - Prob. 11RQCh. 21 - Prob. 12RQCh. 21 - Prob. 13RQCh. 21 - What role do paracrines play in digestion? Give...Ch. 21 - Prob. 15RQCh. 21 - Prob. 16RQCh. 21 - Prob. 17RQCh. 21 - Prob. 18RQCh. 21 - Prob. 19RQCh. 21 - Prob. 20RQCh. 21 - Prob. 21RQCh. 21 - Prob. 22RQCh. 21 - Mary Littlefeather arrives in her physicians...Ch. 21 - Using what you have learned about epithelial...Ch. 21 - Intestinal transport of the amino acid analog MIT...
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- How does the presence of food in the small intestine inhibit gastric secretion and motility?arrow_forwardWhich 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_forwardWhat is the difference between a complete digestive system and an incomplete digestive system? How are these types of digestive tubes associated or not to extracellular digestion?arrow_forward
- What is the difference between digestion and extraction?arrow_forwardIn what ways is the surface area of the gastrointestinal tract itself increased? How does this aid absorption?arrow_forwardWhat purpose is served by muscular sphincters at various locations along the length of the GI tract?arrow_forward
- What is the role of bile salts in the digestive process? In absorption?arrow_forward1) Explain how digestive system works. 2) What is the difference of non-ruminant stomach to ruminant stomach? 3) Name the four compartments of the stomach of ruminant. Which two are located primarily on the left side? Which is the largest? Which is the true“chemical stomach”?arrow_forwardWhich type of motility is primarily responsible for mixing the chyme and accessory gland secretions within the small intestine—segmentation or peristalsis? Which for propulsion? Explain each.arrow_forward
- Name the four compartments of the stomach of ruminant. Which two arelocated primarily on the left side? Which is the largest? Which is the true“chemical stomach”?arrow_forwardWhich structures of the lamina propria of the small intestine are responsible for transporting absorbed lipids (fats)? O Blood capillaries O Lacteals O Peyer's patches O MALT tissue O Duodenal glands Question 24 What structure of the large intestine is made up of the longitudinal strips of smooth muscle? O Internal anal sphincter O Pyloric sphincter O Teniae coli O Epiploic appendage O Cardiac sphincterarrow_forwardWhat is the mechnical and chemical digestive process of eating a chicken sandwich? What roles does the pancreas,gallbladder and liver play?arrow_forward
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