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GIT Anatomy: Esophagus to Large Intestine

12 Questions

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GIT Anatomy: Esophagus to Large Intestine

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Questions and Answers

Which anatomical structure wraps around the esophagus at the level of the cardiac orifice?

Circular muscle fibers

Right crus of the diaphragm (correct)

Sphincter of Oddi

Peritoneal membrane

At what vertebral level does the esophagus enter the abdominal cavity?

T11

T10 (correct)

Which part of the stomach is fixed in place at both its esophageal and duodenal ends?

Cardia (correct)

Fundus

Pyloric antrum

Body

What creates a LES (Lower Esophageal Sphincter) at the junction between the stomach and esophagus?

Right crus of the diaphragm Signup and view all the answers

In which part of the gastrointestinal tract do longitudinal folds of mucosa close to the junction between stomach and esophagus almost close the lumen of the esophagus?

Duodenum Signup and view all the answers

Which part of the stomach is described as being the most distensible (dilated) in the gastrointestinal tract?

Fundus Signup and view all the answers

Which of the following is NOT one of the 4 regions of the stomach?

Esophagus Signup and view all the answers

What is the definition of a physiological sphincter?

A condition or structure that helps maintain contents within an organ and prevents backflow, but lacks the anatomical structure of a sphincter Signup and view all the answers

How is the fundus of the stomach defined?

The area above the horizontal plane extending from the cardiac notch Signup and view all the answers

What is the function of the greater omentum?

It hangs down in front of the intestines and folds back up to the transverse colon Signup and view all the answers

Which of the following statements about the muscular wall of the stomach is correct?

The stomach wall has an outer longitudinal muscle layer and an inner circular muscle layer Signup and view all the answers

What is the function of the right crus in relation to the esophageal sphincter?

It is one of the components of the physiological sphincter at the esophageal opening Signup and view all the answers