Digestive system intro

How much food do humans eat on average per day?

• Less than 1 kilogram

• Between 1 and 2.7 kilograms

• Between 2 and 5 kilograms

• Exactly 3 kilograms

How many organs are part of the digestive system?

• Five

• Ten

• Eight

• Twelve

What is the total internal surface area of the gastrointestinal tract?

• Between 10 and 20 square meters

• Between 30 and 40 square meters

• Exactly 50 square meters

• More than 60 square meters

How much saliva do we produce each day?

• About 2 liters

• More than 3 liters

• About 1.5 liters

• About 0.5 liters

What is the length of the esophagus?

• 45 centimeters

• 15 centimeters

• 35 centimeters

• 25 centimeters

What is the name of the frothy liquid food turns into after being in the stomach?

• Enzyme

• Bolus

• Bile

• Chyme

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

• In the large intestine

• In the jejunum and ileum

• In the duodenum

• In the stomach

How long does the food's journey typically last from ingestion to expulsion?

• More than 40 hours

• Between 20 and 30 hours

• Between 10 and 20 hours

• Between 30 and 40 hours