Stomach Anatomy (Topography, External Features, Parts, Layers)
Content:
0:00 Introduction
0:29 Topography of the Stomach
1:56 External Features of the Stomach
2:30 Parts of the Stomach
3:56 Layers of the Gastric Wall
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Topography of Gaster:
Holotopy: Lies in the Epigastric Region and Left Hypochondriac Region (Left upper quadrant).
○ From Cardiac Orifice (Ostium Cardiacum)
○ To Pyloric Orifice (Ostium Pyloricum)
Syntopy:
○ Anterior wall: Diaphragm, Liver, Anterior abdominal wall
○ Posterior Wall: Left Kidney, Spleen, Pancreas, Transverse Colon
External Features:
Lesser Curvature (Curvatura Minor)
○ Angular Notch (Incisura Angularis)
Greater Curvature (Curvatura Major)
○ Cardiac Notch (Incisura Cardialis)
Parts of the Stomach:
Cardiac Part (Pars Cardiaca)
Fundus (Fundus Gastricus)
Body of Gaster (Corpus Gastricum)
Pyloric Part (Pars Pylorica)
○ Pyloric Antrum (Antrum Pyloricum)
○ Pyloric Canal (Canalis Pyloricus)
Layers of the Gastric Wall:
Tunica Mucosa (2-3 cm)
○ Gastric Folds (Plicae Gastricae)
○ Areae Gastricae
○ Simple Columnar Epithelium
○ Gastric Pit (Foveolare Gastricae)
○ Lamina Propria
○ Muscularis Mucosa
Tela Submucosa
○ Loose Connective Tissue
Tunica Muscularis
○ Smooth muscles
○ Inner: Oblique muscle Layer
○ Middle: Circular Muscle Layer
§ Pyloric Sphincter (musculus sphincter pyloricus)
○ Outer: Longitudinal Muscle Layer
Tunica Serosa
○ Formed by the Peritoneum
Sources used in this video:
Memorix Anatomy 2nd Edition by Hudák Radovan (Author), Kachlík David (Author), Volný Ondřej (Author)
Biorender
University notes and lectures