Digestive System Functions & Processes (Revised)

What is the primary function of the digestive system?

• To circulate blood throughout the body.

• To allow the body to get nutrients and energy from food.

• To filter waste products from the blood.

• To regulate body temperature.

What two processes begin the breakdown of food in the mouth?

• Swallowing and acid production.

• Chewing and saliva.

• Peristalsis and enzyme release.

• Absorption and waste removal.

What is the esophagus?

• An organ that mixes food with acid.

• A muscular tube connecting the throat to the stomach.

• A gland that produces digestive enzymes.

• The primary site for nutrient absorption.

What is the function of the lower esophageal sphincter (LES)?

• To break down proteins in the stomach.

• To absorb water from food.

• To prevent food from moving back into the esophagus from the stomach.

• To produce bile for fat digestion.

What happens to food in the stomach?

• It is absorbed into the bloodstream.

• It is mixed with acid and enzymes to break it down into a liquid or paste.

• It is compacted into solid waste.

• It is primarily where fats are absorbed.

Approximately how long is the small intestine?

• 5 feet

• 10 feet

• 20 feet

• 30 feet

Which of the following are segments of the small intestine?

• Colon, Rectum, Anus

• Pharynx, Esophagus, Stomach

• Duodenum, Jejunum, Ileum

• Liver, Pancreas, Gallbladder

What is the main responsibility of the small intestine in digestion?

• Storing waste material.

• Absorbing nutrients.

• Producing digestive acids.

• Initiating the breakdown of food.

What is one of the pancreas's roles in digestion?

• To store bile.

• To purify blood.

• To produce digestive enzymes.

• To absorb water.

What types of nutrients do pancreatic enzymes help break down?

• Vitamins and minerals.

• Water and electrolytes.

• Proteins, fats, and carbohydrates.

• Fiber and roughage.