Digestive System Quiz

What is the primary function of the digestive system?

• To alter the chemical and physical composition of food for absorption

• To transport nutrients directly to cells

• To store food for long periods

• To synthesize new food molecules

Which of the following is NOT an accessory organ of the digestive system?

• Teeth

• Liver

• Stomach

• Pancreas

What is the role of the villi in the small intestine?

• To store undigested food

• To secrete digestive enzymes

• To produce bile

• To increase the surface area for absorption

Which part of the digestive system is responsible for most chemical digestion and nutrient absorption?

What is the function of the muscularis layer in the GI tract?

• To protect against pathogens

• To facilitate peristalsis

• To absorb nutrients

• To secrete mucus

What is the significance of the hepatic portal vein?

• It removes waste products from the liver

• It delivers nutrients from the GI tract to the liver for processing

• It secretes bile into the small intestine

• It carries oxygenated blood to the liver

Which condition is caused by the bacterium Helicobacter pylori?

• Gastric ulcers

• Celiac disease

• Crohn's disease

• Diabetes

What is the main cause of heartburn?

• Ingestion of too much fiber

• Overeating

• Lack of digestive enzymes

• The cardiac sphincter not closing properly

What is the primary component of feces?

What is the role of the large intestine in the digestive process?

• To perform the majority of chemical digestion

• To absorb significant amounts of water

• To produce digestive enzymes

• To secrete bile