Digestive System Worksheet

What is the primary function of the digestive system?

• To protect the body from pathogens

• To break down food into absorbable nutrients

• To store waste products

• To produce hormones that regulate metabolism

Which of the following organs is NOT part of the gastrointestinal (GI) tract?

• Stomach

• Pancreas

• Small intestine

• Esophagus

What enzyme is secreted by the salivary glands to begin the digestion of carbohydrates?

• Amylase

• Pepsin

• Trypsin

• Lipase

Which part of the small intestine is responsible for the majority of nutrient absorption?

• Duodenum

• Jejunum

• Ileum

• Cecum

Which digestive hormone is responsible for stimulating the release of bile from the gallbladder?

• Cholecystokinin (CCK)

• Gastrin

• Secretin

• Insulin

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

• Teeth

• Pancreas

• Small intestine

• Liver

Which of the following enzymes begins the breakdown of proteins in the stomach?

• Amylase

• Pepsin

• Lipase

• Lactase

Which of the following layers of the gastrointestinal tract is responsible for absorption?

• Mucosa

• Submucosa

• Muscularis

• Serosa

Which of the following structures in the digestive system helps propel food toward the stomach?

• Muscularis mucosae

• Buccal cavity

• Muscularis externa

• Rugae

Which of the following is a function of the liver in the digestive process?

• Produces saliva

• Secretes bile

• Produces digestive enzymes

• Absorbs nutrients