Human Digestive System Anatomy Quiz

The liver produces bile, which is stored in the gallbladder and released into the small intestine to aid in the digestion of fats.

The pancreas secretes digestive enzymes (such as amylase, lipase, and proteases) into the small intestine to help break down carbohydrates, fats, and proteins.

The large intestine absorbs water and salts from the undigested material passed from the small intestine, forming solid waste (feces).

Hydrochloric acid in the stomach helps break down food, particularly proteins, into smaller, more digestible molecules. It also kills many bacteria that enter the stomach with food.

Molars are the flat teeth located at the back of the mouth responsible for grinding and chewing food.

Amylase is an enzyme that breaks down carbohydrates (starches and sugars) into smaller molecules like maltose and glucose.

The small intestine is the primary site of nutrient absorption, where digested food molecules are absorbed into the bloodstream.

Lipase is an enzyme that breaks down lipids (fats) into fatty acids and glycerol, facilitating their absorption in the small intestine.

Peristalsis is the involuntary muscular contractions that propel food through the digestive system, from the esophagus to the anus.

The gallbladder stores and concentrates bile produced by the liver, releasing it into the small intestine to aid in the digestion of fats.

The villi are small, finger-like projections in the small intestine that increase its surface area and facilitate the absorption of nutrients into the bloodstream.

Cholecystokinin (CCK) is a hormone released by the small intestine in response to the presence of fats and proteins, stimulating the release of bile from the gallbladder and digestive enzymes from the pancreas.

The majority of nutrient absorption occurs in the small intestine, specifically in the lining of the jejunum and ileum, where nutrients are absorbed into the bloodstream or lymphatic system.

The cardiac sphincter, also known as the lower esophageal sphincter, is a ring of muscle located at the junction between the esophagus and the stomach. It regulates the passage of food into the stomach and prevents the backflow of stomach contents into the esophagus.

Amylase, an enzyme that breaks down carbohydrates, is not a component of gastric juice. Gastric juice primarily consists of hydrochloric acid, pepsin, and mucus.