The Digestive System

Which part of the mouth provides mechanical digestion?

• teeth
• saliva
• smooth muscles
• gastric juices (HCl acid)

Which part of the mouth provides chemical digestion?

• teeth
• saliva
• smooth muscles
• gastric juices (HCl acid)

Where does the digestion of proteins take place?

• Mouth and stomach

• Stomach and small intestine

• Mouth and small intestine

• Mouth, stomach and small intestine

Which of these nutrients are digested in the mouth using enzymes?

• Carbohydrates and proteins

• Proteins

• Carbohydrates

• Fats

What is the enzyme contained in the saliva?

• Amylase

• Pepsine

• Hydrochloride acid

• Lipase

Where is the pancreatic juice released?

• Small intestine

• Stomach

• Large intestine

• Mouth

Where is the bile stored?

• Liver

• Gall bladder

• Pancreas

• Small intestine

What is the nutrient that bile facilitates its digestion?

• Proteins

• Lipids

• Carbohydrates

• Protein and lipids

Where is the bile released?

• Pancreas

• Liver

• Stomach

• Small intestine

• Mouth

What is the function of the villi?

• To increase the absorption surface

• To digest the last nutrients

• To form feces

• To comb the small intestine