ANATOMY & PHYSIOLOGY 4/E PAC 1 SEMESTER
4th Edition
ISBN: 9781265061173
Author: McKinley
Publisher: MCG CUSTOM
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Chapter 26, Problem 12DYKB
Discuss the reason why the involuntary sequence of contraction in the pharyngeal phase of swallowing involves skeletal muscle.
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Name and briefly describe two types of contractions thatoccur in the colon and nowhere else in the alimentarycanal.
Label the digestive system structures in the following figure.
Describe the sequence of events that occur during swallowing.
Chapter 26 Solutions
ANATOMY & PHYSIOLOGY 4/E PAC 1 SEMESTER
Ch. 26.1 - How is the gastrointestinal (GI) tract...Ch. 26.1 - Prob. 2WDYLCh. 26.1 - What specific layer(s) must substances cross to...Ch. 26.1 - Prob. 4WDYLCh. 26.1 - Prob. 5WDYLCh. 26.1 - Prob. 6WDYLCh. 26.1 - Prob. 7WDYLCh. 26.1 - Prob. 8WDYLCh. 26.1 - Prob. 9WDYLCh. 26.2 - What structures are considered part of the upper...
Ch. 26.2 - Prob. 11WDYLCh. 26.2 - Prob. 12WDYLCh. 26.2 - How is the bolus moved from the oral cavity into...Ch. 26.2 - Prob. 14WDYLCh. 26.2 - Prob. 15WDYLCh. 26.3 - What organs are considered part of the lower GI...Ch. 26.3 - What are the three anatomic structures that...Ch. 26.3 - Prob. 18WDYLCh. 26.3 - Diagram the ducts of the accessory digestive...Ch. 26.3 - Prob. 20WDYLCh. 26.3 - Prob. 21WDYLCh. 26.3 - Prob. 22WDYLCh. 26.3 - Prob. 23WDYLCh. 26.3 - Which substances are typically absorbed by the...Ch. 26.4 - What enzymes are required to completely break down...Ch. 26.4 - How are proteolytic enzymes activated in the...Ch. 26.4 - What is the function of bile salts in lipid...Ch. 26.4 - Prob. 28WDYLCh. 26.4 - Prob. 29WDYLCh. 26.4 - Prob. 30WDYLCh. 26 - _____ 1. Which organ is located in the right upper...Ch. 26 - _____ 2. The _____ cells of the stomach are...Ch. 26 - _____ 3. Which of the following is an unregulated...Ch. 26 - _____ 4. Which organ (or part of an organ) is...Ch. 26 - _____ 5. Pancreatic juice contains a. HCO3 and...Ch. 26 - _____ 6. Bile is transported through the a....Ch. 26 - _____ 7. Digestion of proteins begins in the a....Ch. 26 - Prob. 8DYKBCh. 26 - _____ 9. Digestive enzymes that chemically digest...Ch. 26 - _____ 10. Most of the absorption of our digested...Ch. 26 - The GI tract from the esophagus to the anal canal...Ch. 26 - Discuss the reason why the involuntary sequence of...Ch. 26 - Prob. 13DYKBCh. 26 - Compare the structure of the circular folds,...Ch. 26 - Discuss why the tunica mucosa in the colon has a...Ch. 26 - Prob. 16DYKBCh. 26 - What is the role of the gallbladder in digestion?Ch. 26 - Describe the different forms of mechanical...Ch. 26 - Prob. 19DYKBCh. 26 - How are lipids absorbed in the GI tract?Ch. 26 - Prob. 1CALCh. 26 - Prob. 2CALCh. 26 - What component of the digestive tract can you not...Ch. 26 - The pancreatic ducts are blocked with a thick,...Ch. 26 - Prob. 5CALCh. 26 - Alexandra experienced vomiting and diarrhea and...Ch. 26 - A key event in the chemical digestion processes...Ch. 26 - Most cases of colorectal cancer occur in the most...
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- WHY is stomach activity inhibited during the intestinal phase of digestion? Explain in detail, including HOW this is accomplished.arrow_forwardDescribe the peristaltic reflex (including sensory nerves in the intestinal wall, motor that provides contraction behind and relaxation in front of the food, which causes the contents to be pushed forward)arrow_forwardGiven the following question and choices: The initial pressure that initially stimulates defecation reflex will inhibit all of the following EXCEPT Tunica muscularis of the upper half of anal canal Circular muscles of rectum Auerbach’s plexus on the lower half of anal canal Skeletal muscles of the lower half of anal canal The correct answer to this question is circular muscles of rectum. Please explain.arrow_forward
- List the three most important ways to increase the intestinal surface without increasing the length of the intestine (start with the largest):arrow_forwardWhen the duodenu is actively digesting food, the Sphincter of Oddi released both bile and pancreatic juice into the duodenum Between meals, when the Sphincter of Oddi is closed, an accessory pancreatic duct remains open, allowing a slow but continual flow of pancreatic juice into the duodenum between meals WHy must there be pancreatic juice in the duodenum even if no food is currently being digested? A- Even if there isnt chyme in the duodenum, stomahc acid might leak into the duodenum. the trypsin in pancreatic juice neutralizes that B- We eat a lot, so we're always digesting food in the duodenum C - the process of fat breakdown is slow, so lipids could stay in the duodenum for over a day, so we need a steady supply of pancreatic lipase. D- Even if there isn't chyme in the duodenum, stomach acid might leak into the duodenum. The bicarbonate in pancreatic juice neutralizes thatarrow_forwardDescribe the main actions in the mouth, stomach, small intestine, and large intestine during lipid digestion and absorption. Describe the substrate(s) and product(s) of each of the give major enzymes we discussed: lingual lipase, gastric lipase, pancreatic lipase, phospholipase A2, and carboxyl ester lipase. Describe emulsification of lipids. Why does this need to happen for digestion and absorption to occur? Describe how lipids are absorbed at the apical membrane. Describe lipid transport in the enterocyte. Describe lipid transport across the basolateral membrane and into circulation. Define the brain-gut axis and give examples of how lipids impact. Give examples of symptoms related to malabsorption of lipids. Give examples of diseases/conditions involving malabsorption of lipids.arrow_forward
- Describe two different ways that gastrin secretion is stimulated during the gastric phase of the response to a meal.arrow_forwardIdentify the organs of the alimentary canal from the mouth to the anus and briefly state their function? Discuss the roles of the liver, pancreas, and gallbladder in digestion? Why is it important that chyme from the stomach is delivered to the small intestine slowly and in smallamounts?Why does the pancreas secrete some enzymes in their inactive forms, and where are these enzymes activated? Compare and contrast the digestion of the three macronutrients? (Carbs, fats, proteins)arrow_forwardList the major events of swallowingarrow_forward
- Put the following events in the correct chronological order in regards to digestion of protein as it flows through the digestive tract: 1. Activation of pepsin 2. Release of cholecystokinin 3. Release of pancreatic proteases 4. Gastric acid secretionarrow_forwardExplain why mechanical digestion is an important precursor to chemical digestion that enables chemical digestion to be more efficient. Give specific examples of the anatomical structures that facilitate these processes.arrow_forwardWrite the functions of the following in the digestive process:i. Bileii. Bicarbonate secreted by the duodenal wall.iii. Pancreatic amylase.arrow_forward
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