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Questions and Answers
Which tissue layer of the digestive tract is continuous with the external environment?
Which tissue layer of the digestive tract is continuous with the external environment?
- Lumen (correct)
- Mucose
- Serosa
- Submucose
Which enzyme is present in saliva for carbohydrate digestion?
Which enzyme is present in saliva for carbohydrate digestion?
- Trypsin
- Pepsin
- Amylase (correct)
- Lipase
Where does most absorption occur in the digestive system?
Where does most absorption occur in the digestive system?
- Esophagus
- Large intestine
- Small intestine (correct)
- Stomach
Which sphincter is normally closed to prevent air from entering the esophagus?
Which sphincter is normally closed to prevent air from entering the esophagus?
Which component of saliva acts as a bicarbonate buffer?
Which component of saliva acts as a bicarbonate buffer?
Which layer of the digestive tract consists of smooth muscle and the enteric nervous system?
Which layer of the digestive tract consists of smooth muscle and the enteric nervous system?
What is the main function of the upper sphincter (pharyngoesophageal sphincter)?
What is the main function of the upper sphincter (pharyngoesophageal sphincter)?
Which component of saliva plays a role in protecting the oral cavity from microorganisms?
Which component of saliva plays a role in protecting the oral cavity from microorganisms?
What is the primary function of the muscularis externa in the digestive tract?
What is the primary function of the muscularis externa in the digestive tract?
Which part of the digestive system serves as a common passageway for both the digestive and respiratory systems?
Which part of the digestive system serves as a common passageway for both the digestive and respiratory systems?
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