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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Match each substance with its description.

_____ gastrin a. enzyme that acts in thestomach
_____ secretin b. produced by colon bacteria
_____ bicarbonate c. breaks down polysaccharides
_____ bile d. raises the pH of chyme
_____ salivary amylase e. stimulates bicarbonate secretion by the pancreas
_____ pepsin f. hormone made by stomach
_____ short chain fatty acids(SCFAs) g. emulsifies fats

Summary Introduction

To match: Each substance with its description.

Explanation

Gastrin.- f. hormone made by the stomach.

Gastrin is a peptide hormone that is secreted by specialized cells called ‘G’ cells that are found in the lining of the stomach. Gastrin released by ‘G’ cells stimulates the stomach to release gastric acid that aids to break down the proteins and absorb certain vitamins.

Secretein - e. stimulates bicarbonate secretion by the pancreas.

Secretin is a peptide hormone that is secreted by specialized cells called‘s’ cells that are found in the lining of the duodenum. Secretin hormones are involved in several regulation processes such as regulating secretion in pancreas, liver, and stomach. It helps to stimulate ductal cells of the pancreas to produce bicarbonates.

Bicarbonate.- d. raises pH of chyme.

Initially the pH chyme will be around 1.5 to 3.0. Bicarbonate is released along with the pancreatic juice increases the pH to 7.0. This is done to activate the enzymes in pancreatic juice to break down the food particles...

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