In a lactose intolerant individual which of the following answers correctly describes the direction of water movement across the intestinal epithelia? Select one: a. From the epithelia of the small intestine to the epithelia of the large intestine b. From the epithelia of the large intestine to the epithelia of the rectum c. From the blood supply to the lumen of the intestine

In a lactose intolerant individual which of the following answers correctly describes the direction of water movement across the intestinal epithelia? Select one: a. From the epithelia of the small intestine to the epithelia of the large intestine b. From the epithelia of the large intestine to the epithelia of the rectum c. From the blood supply to the lumen of the intestine

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter16: The Digestive System

Section: Chapter Questions

Problem 4UC

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Similar questions

Brunner's glands secrete an alkaline product that helps achieve optimal pH for the activity of pancreatic enzymes. Where are these glands located? A. At the base of villi throughout the small intestine B. In the epithelium of the ampulla of Vater C. In the mucosa and submucosa of the jejunum D. In the submucosa of the duodenum E. In the submucosa of the ileum
Explain how fats are emulsified and digested in the vertebrate gut. Explain how bile aids the digestive process even though it contains no enzymes. Provide an explanation for the following observation: fats are broken into fatty acids and monoglycerides in the intestinal lumen, but appear later in the blood as fat droplets.
Reduced peristalsis would slow the movement of stool through the large intestine. How might this affect water concentration in the stool?
Which is a correct statement about the Na+/K+ transporter (pump), and its cytology and cellular role? It is found the basal side of intestinal epithelial cells, pumping Na+ out of the cell into the blood. It is found on the plasma membrane of neurons, pumping Na+ into axons from the blood. It is found on the membrane of the lysosome, pumping K+ into the lumen of the lysosome. It is found on the apical side of intestinal epithelia, pumping K+ into the lumen of the intestine.
Mr. Johnson has a gallstone (a stone) that completely obstructs the normal flow of bile and pancreatic juice into the duodenum. Explain how the digestion of carbohydrates (polysaccharides and disaccharides), lipids (triglycerides), proteins, and nucleic acids would be affected throughout the digestive tract, starting in the mouth and ending in the microvilli of the cells in the small intestine. Make one paragraph per molecule.
A. What is/are the primary role(s) of the large intestine? a. to complete enzymatic digestion and store indigestible material b. to initiate enzymatic digestion of carbohydrates and to store water c. to absorb water from digested material, with essentially no digestive role of its own d. to secrete water into the material that is left over after all available nutrients have been absorbed e. to digest fats A. In the intestine most nutrients are absorbed regardless of whether the body has an immediate need or shortfall of them; ie there is little control over amounts taken up – which of the following does not follow this rule? a. absorption of sodium b. absorption of water c.absorption of iron d. absorption of fat soluble vitamins e. none of the above follow this rule – close control is exerted over all of them
Which of these could be absorbed directly without need ofdigestion?a. glucose d. nucleic acidb. fat e. All of these are correct.c. protein
Non-heme iron absorption from the small intestinal lumen across the enterocytes involve: a.Duodenal cytochrome B, Divalent Metal transporter 1, Ferroportin 1 transporter, and Hephasetin b.Passive transport with concentration gradient c.All forms of iron are absorbed by Heme transporters only d.None of the above
A general principle of physiology is that structure is a determinant of—and has coevolved with—function. One example highlighted in this chapter is the large surface area provided by the villous and microvillous structure of the cells lining the small intestine
Which of the following function below is not performed by the liver? a. deamination of amino acids to form keto acids b. production of glucagon c. conversion of non-carbohydrate molecules to glucose d. synthesis of lipoproteins to transport fatty acids
Transport of glucose across the basolateral membrane of intestinal epithelial cells and into the vascular system requires which of the following conditions to occur? Select one: a. Sodium concentration on the inside of the epithelial cell is equal to that outside the basolateral membrane b. Sodium concentration is higher on the inside of the epithelial cell than on the outside of the basolateral membrane c. Sodium concentration inside the epithelial cell is lower than sodium concentration in the intestinal lumen d. Sodium concentration inside the epithelial cell is higher than that sodium concentration in the intestinal lumen
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.