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Digestive System Process Quiz

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Questions and Answers

What is the role of peristaltic movements in the digestive system?

Release hydrochloric acid in the stomach

Mix food with saliva in the mouth

Help push food forward along the digestive tube (correct)

Assist in absorbing nutrients in the small intestine

What is the function of hydrochloric acid in the stomach during digestion?

Assist in emulsifying fats

Break down proteins with the help of pepsin (correct)

Protect the stomach lining from enzymes

Create an alkaline medium for enzyme activity

How does the mucus in the stomach contribute to digestion?

Inhibits the action of hydrochloric acid

Secretes additional enzymes for digestion

Helps in absorbing nutrients from food

Protects the stomach lining from acid damage (correct)

What controls the exit of food from the stomach into the small intestine?

Sphincter muscle (B) Signup and view all the answers

In what organ does digestion primarily occur through the action of gastric glands?

Stomach (A) Signup and view all the answers

How does food move from the mouth to the stomach?

Through peristaltic movements (A) Signup and view all the answers

What is the main function of the small intestine?

Absorption of nutrients (A) Signup and view all the answers

Why do herbivores need a longer small intestine compared to carnivores?

To allow the digestion of cellulose in grass (D) Signup and view all the answers

How does the presence of villi in the small intestine benefit the process of absorption?

Increase the surface area for absorption (D) Signup and view all the answers

What is the role of bile salts in the small intestine?

Break down fats into smaller globules (C) Signup and view all the answers

What happens to unabsorbed food in the large intestine?

Excreted as waste material (A) Signup and view all the answers

Which organ secretes pancreatic juice containing enzymes for digesting proteins and fats?

Pancreas (C) Signup and view all the answers

What is the function of dental plaque in the context of tooth decay?

Causes demineralization of enamel (C) Signup and view all the answers

What do the walls of the small intestine contain that secrete intestinal juice?

Glands (A) Signup and view all the answers

How does the anal sphincter control the passage of waste material out of the body?

Regulates the exit of waste material via the anus (B) Signup and view all the answers

Why is it challenging for enzymes to act on fats present in the small intestine?

Fats are present in large globules (D) Signup and view all the answers

What role do blood vessels play in the process of nutrient absorption in the small intestine?

Transport absorbed food to body cells (C) Signup and view all the answers

How does dental caries start and progress in teeth?

By gradual softening of enamel and dentine (C) Signup and view all the answers