Exploring the Human Digestive System

How much food does an average human consume daily?

• Less than 1 kilogram

• Between 2 and 5 kilograms

• More than 3 kilograms

• Between 1 and 2.7 kilograms

What is the total length of the human digestive system?

• Over 20 meters

• About 5 meters

• Approximately 9 meters

• Nearly 15 meters

Which organ is not part of the trio that breaks down food using special juices?

• Pancreas

• Gallbladder

• Liver

• Spleen

How much saliva do humans produce daily?

• Nearly 2 liters

• Approximately 1.5 liters

• About 0.5 liters

• Over 3 liters

What triggers the release of acids and enzyme-rich juices from the stomach wall?

• The process of chewing

• The entry of food into the esophagus

• Hormones secreted by cells in the lining

• The presence of the bolus

What is the role of bile in digestion?

• It breaks down proteins

• It digests carbohydrates

• It dissolves fats

• It absorbs nutrients

Where does the final deconstruction of proteins into amino acids occur?

• In the liver

• In the small intestine

• In the large intestine

• In the stomach

What is the main function of the villi in the small intestine?

• To propel food through the intestine

• To produce digestive enzymes

• To secrete bile

• To maximize molecule absorption

What happens to the leftover fiber, water, and dead cells in the large intestine?

• They are absorbed into the bloodstream

• They are expelled immediately

• They are converted into nutrients

• Most of the remaining fluid is drained out

How long does the food's journey through the digestive system typically last?

• More than 70 hours

• Between 50 and 60 hours

• Between 30 and 40 hours

• Between 10 and 20 hours