Upper Digestive System Quiz

The hollow tube lined with smooth muscle that connects the mouth to the stomach.

• Epiglottis
• Peristalsis
• Stomach
• Esophagus

What separates the esophagus from the stomach?

• lower esophageal sphincter

• pyloric sphincter

• rugae

• upper esophageal sphincter

Enzyme in saliva that breaks down carbohydrates in the mouth.

• Amylase

• Pepsin

• Pepsinogen

• Hydrochloric acid

Where in the body does the process of chemical digestion begin?

• mouth

• esophagus

• stomach

• small intestine

What structures are shown (and labeled) in this diagram?

• Microvilli

• Sphincters

• Uvula

• Salivary Glands

What is letter A in the diagram?

• Hard Palate

• Soft Palate

• Uvula

• Tongue

What is letter B in the diagram?

• Hard Palate

• Soft Palate

• Uvula

• Tongue

What is letter C in the diagram?

• Labia

• Gingivae

• Uvula

• Tongue

What are the four front middle teeth called?

• incisors
• premolars
• molars
• canines

Which teeth are identified in this picture?

• incisors
• premolars
• molars
• canines