Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 41, Problem 8TYU
Summary Introduction
To review:
The importance of the greater surface area of the small intestine as compared to stomach or esophagus.
Introduction:
The small intestine is the major part of the alimentary canal. Its main function is to digest the food and absorb various nutrients and minerals from the digested food. The small intestine is divided into three parts, namely, duodenum, jejunum, and ileum.
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What is the primary function of the large intestine? Why is this important?
Mucus is secreted everywhere along the digestive tract. What purpose does it serve? Why do you think that the number of goblet cells (produce mucus) is so much higher in the large intestine?
Where does final digestion of food and absorption of nutrients occur in the gastrointestinal tract?
Descending colon of the large intestine
lower stomach
Duodenum of the small intestine
Ascending colon of the large intestine
What is the importance of the small intestine having a large surface area?
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- What are the main functions of the stomach? What roles do enzymes and hormones play?arrow_forwardFigure 34.19 Which of the following statements about digestive processes is true? Amylase, maltaseT and lactase in the mouth digest carbohydrates. Trypsin and lipase in the stomach digest protein. Bile emulsifies lipids in the small intestine. No food is absorbed until the small intestine.arrow_forwardExplain the differences between the digestion roles of the small and large intestines. Does the appendix also have a digestive function?arrow_forward
- Figure 34.11 Which of the following statements about the digestive system is false? Chyme is a mixture of food and digestive juices that is produced in the stomach. Food enters the large intestine before the small intestine. In the small intestine, chyme mixes with bile, which emulsifies fats. The stomach is separated from the small intestine by the pylloric sphincter.arrow_forwardWhy is the internal surface of the small intestine arranged into progressively smaller folds? What are these folds called?arrow_forwardWhy is there a need to increase the surface area intestines?arrow_forward
- What is the difference between Small intestine and Large intestine.arrow_forwardDigestion takes place in a long tube-like canal called the alimentary canal, or the digestive tract. Food travels through these organs in the following order: 1) Mouth, gullet, stomach, small intestine,large intestine and rectum 2) Mouth, oesophagus, stomach, large intestine,small intestine and rectum 3) Mouth, stomach, oesophagus, small intestine,large intestine and rectum 4) Mouth, stomach, gullet, small intestine,large intestine and rectumarrow_forwardin which part of the small intestine does the majority of digestion and absorption occur? Duodenum, jejunum, ileumarrow_forward
- Why is the stomach both muscular and expandable?arrow_forwardAn ulcer on the internal lining of the stomach became so severe that it eroded through the entire wall of the stomach and caused blood loss into the abdominopelvic cavity. Which of the following membranes were penetrated? O parietal peritoneum O mucous membrane O visceral peritoneum O the parietal peritoneum and mucous membrane O the mucous membrane and visceral peritoneumarrow_forward22. Match the term with its descriptions: anal canal, appendix, buccal cavity, colon, esophagus, hard palate, haustra, ileocecal valve, microvilli, mouth, lymphoid nodules, pharynx, plicae, pyloric sphincter, rugae, small intestine, soft palate, stomach, tongue, villi. You may use al gl answers more than once. notiqiozds nietor nolo Finger-like extensions of the intestinal mucosa that increase the surface area: Villi nin Cua.couerby GM.AS (20jon ouo9i Collections of lymphatic tissue found in the submucosa of the small intestine; provide 92 fig tes protection against bacteria: 10 XL mo Folds of the small intestine wall that act like "speed bumps": aboud Two anatomical regions involved in the mechanical breakdown of food: mouth Organ that mixes and positions food Common passage for food and air: Phorynx Literally a food chute; has no digestive or absorptive role: Esophaqus and 2roo12: in the mouth: Tongue o el 22sq of yilidsni Folds of the stomach mucosa that allow stretching: Tril gio…arrow_forward
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