Understanding the Human Digestive System

How much food does an average human eat per day?

• Between 3 and 4 kilograms

• Between 0.5 and 1.5 kilograms

• Between 2 and 3 kilograms

• Between 1 and 2.7 kilograms

What is the total length of the digestive system?

• About 9 meters

• About 5 meters

• About 15 meters

• About 12 meters

How many specialized cell types are contained in the digestive system?

• Over 10

• Over 20

• Over 15

• Over 30

What is the internal surface area of the gastrointestinal tract?

• Between 10 and 20 square meters

• Between 40 and 50 square meters

• Between 20 and 30 square meters

• Between 30 and 40 square meters

Which organ stores bile?

• Stomach

• Pancreas

• Liver

• Gallbladder

What is the role of the mesentery?

• Secretes hormones

• Supports and positions digestive organs

• Produces digestive enzymes

• Absorbs nutrients

How much saliva do we produce each day?

• About 2 liters

• About 1 liter

• About 1.5 liters

• About 0.5 liters

What is the name of the moist lump formed in the mouth during chewing?

• Enzyme

• Chyme

• Bolus

• Bile

What is the length of the esophagus?

• 15 centimeters

• 20 centimeters

• 30 centimeters

• 25 centimeters

What muscular action moves food down the esophagus?

• Filtration

• Osmosis

• Diffusion

• Peristalsis