Digestive System Quiz Esophagus and Stomach

What is the process called that pushes the bolus down to the stomach in the esophagus?

• Digestion

• Excretion

• Peristalsis

• Absorption

What is the function of the sphincter muscle at the base of the esophagus?

• To prevent food from entering the stomach

• To allow the bolus to enter the stomach

• To mix food with chime

• To produce gastric juice

Which enzyme is responsible for breaking down protein into polypeptides in the stomach?

• Pepsin

• Rennin

• Lipase

• Amylase

What is the average time food remains in the stomach?

• 3 hours

• 4 hours

• 1 hour

• 2 hours

What is the function of hydrochloric acid in gastric juice?

• Provides an alkaline environment

• Activates the enzyme amylase

• Kills bacteria

• Lubricates food

What is the role of mucus in gastric juice?

• Activates pepsin

• Clots milk protein

• Protects the stomach wall

• Breaks down protein

Which muscle controls the rate at which chime exits the stomach?

• Pyloric sphincter

• Epiglottis

• Trachea

• Pharynx

What is the fluid formed by mixing food with gastric juice in the stomach?

• Peristalsis

• Chime

• Bolus

• Rennin

What is the pH range of the strong acid environment created by hydrochloric acid in the stomach?

• 1-2

• 3-4

• 7-8

• 5-6

What is the function of the churning action of the stomach wall?

• To produce bile

• To break up food particles

• To mix food with saliva

• To absorb nutrients