Functions
Organs
Food Journey
Fun Facts
Digestive Tissues
100

What condition is caused by stomach acid flowing back into the esophagus?

What is acid reflux?

100

This organ is responsible for producing bile, which aids in fat digestion.

What is the liver?

100

This is the process by which food is moved from the mouth to the stomach.

What is swallowing?

100

This organ can hold up to about 1 liter of food at one time.

What is the stomach?

100

This tissue lines the stomach and protects it from the acidic environment inside.

What is the mucous membrane?

200

What is the main function of the stomach in digestion?

To break down food with acid and enzymes.

200

This muscular organ churns food and mixes it with digestive juices.

What is the stomach?

200

This muscular tube connects the mouth to the stomach.

What is the esophagus?

200

This is the average length of the small intestine in an adult human.

What is about 20 feet?

200

This muscular tissue type allows the movement of food through the digestive system.

What is smooth muscle?

300

What is the role of bile in digestion?

To help break down fats.

300

This long, coiled organ is where most nutrient absorption occurs.

What is the small intestine?

300

This wave-like muscle movement pushes food through the digestive system.

What is peristalsis?

300

The digestive system is home to this group of helpful microorganisms.

What are gut bacteria?

300

This layer of tissue contains blood vessels and nerves to support the digestive organs.

What is the submucosa?

400

What is the purpose of the epiglottis during digestion?

To prevent food from entering the windpipe during swallowing.

400

This gland produces insulin and enzymes to help digest carbohydrates, proteins, and fats.

What is the pancreas?

400

This is the first part of the small intestine, where most chemical digestion occurs.

What is the duodenum?

400

This organ is sometimes called the “second brain” because of its connection to the nervous system.

What is the gut?

400

This tissue type absorbs nutrients in the small intestine.

What is epithelial tissue?

500

Which enzyme in the stomach helps digest proteins?

What is Pepsin?

500

This organ filters toxins from the blood and produces urea, a component of urine.

What is the kidney?

500

After food is digested, nutrients are absorbed into the bloodstream through this structure.

What are the villi in the small intestine?

500

This gas is produced in the digestive system and can sometimes cause burping or flatulence.

What is methane?

500

This outermost layer of tissue surrounds the digestive organs and reduces friction with other structures.

What is the serosa?

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