Chapter 35, Problem 5A

Summary Introduction

Introduction :

The digestive system breaks down the food so that nutrients can be absorbed by the body. There are three primary functions of the digestive system. The digestive system absorbs food, breaks it down so that nutrients can be absorbed and removes that cannot be digested.

Answer to Problem 5A

Correct answer :

The correct answer is option (A) Row A.

Explanation of Solution

Explanation/justification for the correct answer :

Option (A) Row A. Row A refers to the liver produces bile which is secreted into the small intestine. In the liver, the large fat molecules are digested into smaller molecules with the help of bile juice. The bile juice is stored in the gallbladder to be released into the small intestine when needed. So, the correct answer is option (A).

Explanation for incorrect answer :

Option (B) Row B. Row B refers to the gallbladder produces pepsin which is secreted into the stomach. Pepsin is produced by the lining of the stomach cells. The gallbladder stores bile juice. So, this is an incorrect option.

Option (C) Row C. Row C refers to the pancreas produces acid which is secreted into the large intestine. Insulin is secreted for use in the small intestine. The chemical digestion in the small intestine depends on the pancreas, liver, and gallbladder. The pancreas secrets insulin hormone which helps the small intestine uses energy from glucose. So, this is an incorrect answer.

Option (D) Row D. Row D refers to the villi produces amylase which is secreted into the mouth. Amylase breaks down starches into smaller sugar molecules. Amylase is an enzyme found in saliva, begins the process of chemical digestion by breaking down starches into sugars. This process occurs in our mouth. But villi are found in the small intestine. So, this is an incorrect answer.