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Anatomy of the Stomach

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Questions and Answers

Which of the following is NOT a part of the stomach?

Fundus

Ileum (correct)

Body

Cardia

What is the function of the pyloric sphincter?

To prevent backflow of food into the esophagus

To control the release of stomach contents into the duodenum (correct)

To regulate the passage of food from the esophagus to the stomach

To control the flow of bile

Which arteries supply blood to the stomach?

Renal arteries

Common iliac arteries

Superior mesenteric artery and splenic artery

Right gastric artery and left gastric artery (correct)

Which organ is located posterior to the stomach?

<p>Spleen</p> Signup and view all the answers

Which nerves provide parasympathetic innervation to the stomach?

<p>Vagus nerves</p> Signup and view all the answers

Study Notes

Stomach Structure

The stomach is a J-shaped intraperitoneal organ that digests food from the esophagus to the duodenum.
The stomach has four parts: cardia, fundus, body, and pylorus.

Sphincters

The stomach has two sphincters: inferior esophageal sphincter and pyloric sphincter.
The pyloric sphincter is located anatomically between the stomach and the first part of the duodenum.

Relations

Anteriorly, the stomach is related to the liver and gall bladder.
Posteriorly, the stomach is related to the pancreas, left kidney, and spleen.

Blood Supply

The stomach receives blood supply from the right gastric artery.
The stomach also receives blood supply from the left gastric artery, which arises from the abdominal aorta.

Nerve Supply

The stomach receives sympathetic nerve supply from spinal nerves.
The stomach receives parasympathetic nerve supply from vagus nerves.

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Description

Learn about the structure and functions of the stomach, including its parts, sphincters, relationships with other organs, blood supply, and nerve supply.