Anatomy Bones and Muscles · MU Pleven

53. Stomach

Covers the stomach's position, its J-shaped form and its two ends, two curves, two surfaces and two parts, with the cardiac and pyloric ends described separately. Also summarises lymphatic drainage, the relations of the anterior and posterior surfaces, and nerve and arterial and venous supply, ending with the wall layers and the secretory cell types of the mucosa.

Inside: 10 sections · 6 labelled pictures · 10 flashcards · 4 min

Topic 52 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 10 sections, about 599 words (4 min of reading), with 10 flashcards.

In this note

  1. Introduction
  2. STOMACH (Intraperitoneal)
  3. Ends of the stomach :
  4. Lymphatic drainage:
  5. Curves of the stomach :
  6. Surfaces of the stomach :
  7. Parts of the stomach
  8. Nerve Supply:
  9. Blood supply:
  10. Histology

Introduction

61+62

STOMACH (Intraperitoneal)

  • Definition: the most dilatable part of the digestive system, connecting esophagus to duodenum.
  • Site: occupies part of left hypochondrium, epigastrium, and umbilical regions.
  • Shape: the stomach is J-shaped (most common, steer horn (less common)
  • The stomach has :
  • 2 ends
  • 2 borders (curves)
  • 2 surfaces
  • 2 parts

Ends of the stomach :

1. Cardiac

  • At junction between esophagus and stomach.
  • 1 inch to the left from median plane (behind 7ᵗʰ costal cartilage).
  • Related anteriorly to left lobe of liver.
  • It has no anatomical sphincter (physiological sphincter)
  • Esophagus enter the stomach at an acute angle.

2. Pyloric

  • At junction between stomach and small intestine.
  • 1 inch to the right of the median plane (at L1 level) (?).
  • Related anteriorly to quadrate lobe of liver.
  • It has anatomical sphincter (marked by circular groove and vein of Mayo, connecting right gastric and right gastroepiploic veins).

Lymphatic drainage:

  • Fundus → Pancreatico-splenic lymph nods
  • Lesser curve → superior gastric " "
  • Greater curve → inferior gastric " "
  • Pylorus → Sup. gastric, sub-pyloric or hepatic nodes

The celiac lymph nodes are the terminal group of lymph drainage of the stomach.

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