Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 35, Problem 5MC
Summary Introduction
Introduction:
Peristalsis is a series of wave-like muscular contractions that pushes food through the small intestine. These movements begin in the esophagus when bolus of food is swallowed. Muscles that line esophagus, stomach, small intestine and colon contact and relax in rhythm that produces a wavelike motions.
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It is occasionally necessary for a person to have their gallbladder surgically removed. How will such a person's digestive process be altered?
A.
Pepsinogen would not be converted into pepsin before entering the lumen of the stomach.
B.
The person would be unable to digest fats.
C.
Mucus would not protect the stomach lining.
D.
Water would not be extracted from forming feces.
E.
Bile would go directly from the liver to the duodenum.
Which of the following is an unregulated process in the digestive tract?
a. secretion of cholecystokinin (CCK) by the duodenal mucosa
b. absorption of amino acids across the epithelium of the small intestine
c. release of bicarbonate ion (HCO3–) by pancreatic duct cells
d. peristalsis in the stomach
Which of the following is True?a. The human stomach maintains a very high pH.b. Gastric glands in the stomach wall secrete pepsinogen. c. Bile is released into the stomach from the liver.d. Many different nutrients are absorbed through the stomach.
Chapter 35 Solutions
Biology
Ch. 35.1 - You have probably seen articles warning of the...Ch. 35.1 - Prob. 1TCCh. 35.1 - Prob. 1CSCCh. 35.1 - Prob. 1CYLCh. 35.1 - explain how food energy is measured and how energy...Ch. 35.1 - Prob. 3CYLCh. 35.2 - Prob. 1CYLCh. 35.2 - compare the various ways that invertebrates digest...Ch. 35.2 - explain how vertebrate digestive systems are...Ch. 35.3 - Prob. 1TC
Ch. 35.3 - Stomach acid can be very destructive to the...Ch. 35.3 - Prob. 2TCCh. 35.3 - Prob. 3TCCh. 35.3 - Prob. 1CYLCh. 35.3 - explain how the small intestine absorbs nutrients,...Ch. 35.3 - describe feces and how they are produced and...Ch. 35.3 - Prob. 4CYLCh. 35.3 - The causes of eating disorders are complex and...Ch. 35 - Which of the following is False? a. Carbohydrates...Ch. 35 - Prob. 2MCCh. 35 - Prob. 3MCCh. 35 - Prob. 4MCCh. 35 - Prob. 5MCCh. 35 - Prob. 1FIBCh. 35 - Sponges rely exclusively on __________ digestion....Ch. 35 - Prob. 3FIBCh. 35 - The five major processes carried out by the...Ch. 35 - In humans, a cavity called the __________ is...Ch. 35 - Fats are dispersed by a secretion called...Ch. 35 - Prob. 7FIBCh. 35 - Prob. 1RQCh. 35 - Prob. 2RQCh. 35 - Vertebrates can be grouped into three categories...Ch. 35 - Prob. 4RQCh. 35 - Prob. 5RQCh. 35 - Prob. 6RQCh. 35 - Prob. 7RQCh. 35 - Prob. 8RQCh. 35 - Name four structural or functional adaptations of...Ch. 35 - Prob. 10RQCh. 35 - Prob. 11RQCh. 35 - Prob. 12RQCh. 35 - Prob. 1ACCh. 35 - Prob. 2ACCh. 35 - Prob. 3AC
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- The bile from the liver is delivered to the _______. a. stomach b. liver c. small intestine d. colonarrow_forwardExplain the differences between the digestion roles of the small and large intestines. Does the appendix also have a digestive function?arrow_forwardWhich of the following is true about segmentation in the small intestine?a. It is a type of peristalsis.b. It moves chyme only from the duodenum to the ileum.c. Its frequency is the same in each intestinal segment.d. It is unaffected by cephalic phase stimuli.e. It produces a slow migration of chyme to the large intestine.arrow_forward
- Which of the following is true? a. The internal anal sphincter is made out of skeletal muscle. b. The defecation reflex can be affected by input from the cerebral cortex. c. Defecation is a complex function that requires coordinated involvement from the gastrointestinal and respiratory system. d. Abdominal muscle contraction decreases intra-abdominal pressure and expel feces more rapidly. e. All of the choices.arrow_forwardThe normal mechanism of defecation involves:A. Stretch receptors located in the duodenum and jejunum initiate a long-lasting reflex that relaxes the internal anal sphincter several hours after food initially passes from the stomach to the intestines.B. Stretch receptors located in the rectal wall initiate the defecation reflex inresponse to an incoming mass movement.C. The defecation reflex involves contraction of the rectal wall and simultaneous relaxation of the internal anal sphincter.D. Digestive fluids secreted from the pancreas and gall bladder contain enzymesthat act on the smooth muscle of the intestine, stimulating peristalsis.E. Conscious signals from the cortex will allow for relaxation of the external anal sphincter (when appropriate!).arrow_forwardWhich of the following statements is untrue? a. Roughage takes a long time to digest. b. Birds eat large quantities at one time so that they can fly long distances. c. Cows do not have upper teeth. d. In pseudo-ruminants, roughage is digested in the cecum.arrow_forward
- Which of the following is incorrect regarding gastric juice?a. It is provided by the pancreas.b. It contains pepsin to digest protein.c. It has a pH of 2 due to hydrochloric acid.d. It is produced by the gastric glands.arrow_forwardThe pancreatic ducts are blocked with a thick, sticky mucus in individuals with the genetic condition called cystic fibrosis. What difficulties will these individuals experience? a. inability to produce mucin b. inability to produce HCl c. insufficient digestive enzymes d. excess production of bilearrow_forwardDigestive enzymes that chemically digest most of our ingested food are secreted by the a. liver. b. small intestine. c. pancreas. d. salivary glands.arrow_forward
- Which of the following is true regarding digestion? A. The first segment of the alimentary tract is the duodenum. B. Amylase hydrolyzes starches into simple sugars. C. Bile hydrolyzes amylase into simple sugars. D. Trypsin and chymotrypsin degrade lipids into free fatty acids. E. All of the above answer choices correctly answer the question.arrow_forwardWhich of the following is true about carbohydrate digestion? A. Cellulose and lignin found in plants are totally indigestible even with intestinal bacteria. B. The acidity of the stomach prevents chemical digestion of carbohydrates. C. Dextrin and maltose are the products of chemical digestion of starch by pancreatic amylase. D. Disaccharidases produced from the pancreas breaks down oligosaccharides in the intestines.arrow_forwardThe small intestine is specialized for absorption because it a. is the last section of the digestive tract and retains food the longest. b. has saclike extensions along its length that collect food. c. has no outlet so food remains within it for longer periods of time. d. has an extremely large surface area that allows extended exposure to food.arrow_forward
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