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Human Digestive System: Salivary Enzymes and Food Breakdown

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Human Digestive System: Salivary Enzymes and Food Breakdown

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Questions and Answers

What is the function of mucus in the stomach?

Protecting the inner lining of the stomach from acid (correct)

Neutralizing the acidity of the stomach

Aiding in the digestion of proteins

Breaking down fats into smaller globules

Why do herbivores have longer small intestines compared to carnivores?

To allow for more efficient fat digestion

To support the digestion of cellulose in grass (correct)

To aid in the breakdown of emulsified fats

To increase the absorption of amino acids

What is the purpose of bile salts in the digestive process?

Break down fats into smaller globules for efficient enzyme action (correct)

Aid in protein digestion

Increase the acidity of stomach contents

Stimulate the production of mucus in the stomach

Which organ secretes pancreatic juice containing trypsin and lipase?

Pancreas (C) Signup and view all the answers

Why are villi important in the small intestine?

To increase surface area for absorption (A) Signup and view all the answers

What is the role of the anal sphincter?

Controlling exit of waste material from the body (C) Signup and view all the answers

What is the name of the enzyme found in saliva that breaks down starch?

Salivary amylase (C) Signup and view all the answers

What is the function of hydrochloric acid in the stomach?

Create an acidic environment for enzyme activity (B) Signup and view all the answers

Which organ secretes digestive juices that include hydrochloric acid, pepsin, and mucus?

Stomach (B) Signup and view all the answers

What causes the stomach walls to expand when food enters?

Muscle contractions (B) Signup and view all the answers

What term describes the rhythmic contractions of the muscles in the digestive system that push food forward?

Peristalsis (A) Signup and view all the answers

Apart from digestion, what other main function does saliva serve in the digestive process?

Lubricate the food for swallowing (A) Signup and view all the answers