Digestive System Quiz

What is the first step of the digestive process?

• Absorption

• Secretion

• Ingestion

• Elimination

Which of the following is NOT considered part of the body until absorbed into blood or lymph vessels?

• Mucous membrane

• Lumen materials

• Accessory glands

• Muscularis mucosae

What is the main function of the muscularis layer in the GI tract wall?

• Secretion

• Absorption

• Motility

• Digestion

Which accessory digestive organ produces secretions that empty into the lumen?

• Teeth

• Tongue

• Salivary glands

• Gallbladder

Where does the predominant absorption of nutrients occur in the digestive system?

• Stomach

• Large intestine

• Small intestine

• Oral cavity

What is the function of the sphincter in the GI tract?

• To secrete digestive enzymes

• To absorb nutrients

• To control movement of material into the next section of the GI

• To produce hormones

What is the outermost tunic layer of the GI tract called?

• Mucosa

• Submucosa

• Serosa/Adventitia

• Muscularis

How many layers of smooth muscle does the stomach have?

• One

• Two

• Three

• Four

Which system regulates the digestive system?

• Cardiovascular system

• Nervous and endocrine system

• Respiratory system

• Muscular system

What is the role of the autonomic nervous system (ANS) in the digestive system?

• It secretes digestive enzymes

• It absorbs nutrients

• It innervates smooth muscle and glands of the GI tract

• It produces bile