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Layers of Digestive System: Epithelium, Lamina Propria, Muscularis Mucosae

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Layers of Digestive System: Epithelium, Lamina Propria, Muscularis Mucosae

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Questions and Answers

Which type of muscle does the upper esophageal sphincter consist of?

Cardiac muscle

Visceral muscle

Smooth muscle

Striated muscle (correct)

What is the primary function of the lower esophageal sphincter?

Regulates breathing

Regulates movement of food from the esophagus to the stomach (correct)

Regulates movement of food from the pharynx to the esophagus

Regulates blood flow

Which muscle is responsible for producing the upper esophageal sphincter?

Biceps brachii muscle

Sternocleidomastoid muscle

Gluteus maximus muscle

Cricopharyngeus muscle (correct)

Where is the lower esophageal sphincter located?

At the gastro-oesophageal junction (A) Signup and view all the answers

What does the very distal portion of the oesophagus have as an outer covering?

Serosa (C) Signup and view all the answers

Which layer of connective tissue is identified as the adventitia in the oesophagus?

Submucosa (D) Signup and view all the answers

In which part of the esophagus do we find gastric mucosa?

Lower esophagus (D) Signup and view all the answers