Chapter 9 Nutrition and the Human Digestive System

The human digestive system is made up of a long and muscular tube called the _____.

• digestive canal
• intestinal tube
• alimentary canal

• food passageway

Which accessory organ produces bile?

• Spleen
• Pancreas
• Gallbladder
• Liver

Which of the following is an example of physical digestion?

• Mixing food with saliva
• Swallowing food whole
• Chewing food with teeth
• Breaking down food in the stomach

What enzyme begins the digestion of starch in the mouth?

• salivary amylase
• trypsin
• lipase
• pepsin

What is the product of starch digestion in the mouth?

• Glucose

• Maltose

• Fructose

• Galactose

Which enzyme digests proteins in the stomach?

• Pepsin
• Cellulase
• Lipase
• Amylase

Which structure controls the flow of chyme into the duodenum?

• Esophageal sphincter
• Ileocecal valve
• Cardiac sphincter
• Pyloric sphincter

What enzyme completes the digestion of maltose into glucose?

• Maltase
• Lactase
• Sucrase
• Amylase

Erepsin acts on _____.

• fats
• carbohydrates
• polypeptides

• peptides

A patient has a damaged liver and cannot produce bile. What would be the most likely effect on their digestion?

• Enhanced protein digestion and absorption.
• Protein digestion is halted in the small intestine.

• Fats remain large and are poorly digested due to lack of emulsification.

• Carbohydrates cannot be digested in the mouth.