3.1.2 The Stomach Flashcards
What is the Stomach?
A muscular bag, which is the widest and most distensible part of the alimentary system.
What are the 2 Orifices of the Stomach?
- The Cardial Orifice
- The Pyloric Orifice
What are the 2 Curvatures of the Stomach?
- The Greater Curvature of the Stomach
- The Lesser Curvature of the Stomach
What are the 2 Surfaces of the Stomach?
- The Anterior Surface of the Stomach
- The Posterior Surface of the Stomach
What are the 4 main parts of the Stomach?
(Superior to Inferior)
- The Fundus
- The Body
- The (Pyloric) Antrum
- The Pyloric Canal
Is the Greater Curvature of the Stomach on the superior or the inferior surface?
The Inferior
Is the Lesser Curvature of the Stomach on the superior or the inferior surface?
The Superior
What does the Cardial Orifice connect the Stomach to?
The Oesophagus
What does the Pyloric Orifice connect the Stomach to?
The Duodenum
What is the Pyloric Sphincter?
A thickening of the Circular Layer of the Smooth Muscle, at the junction between the Pylorus and the Duodenum
What is the function of the Pyloric Sphincter?
To control the discharge of the Stomach contents into the Duodenum
What is an example of a congenital condition which affects the Pyloric Sphincter?
Congenital Pyloric Stenosis
Is the Stomach suspended between 2 other abdominal organs?
Yes
Where does the Lesser Omentum extend from / to?
From - The Lesser Curvature of the Stomach
To - The Liver
Where does the Greater Omentum extend from / to?
From - The Greater Curvature of the Stomach
To - The Transverse Colon
What are the Gastric Folds (Rugae) formed from?
The Gastric Mucosa
What is the function of the Gastric Folds (Rugae)?
To provide the stomach with an increased surface area, so it can increase in volume (stretch) with increased pressure - e.g. after eating a meal
In which 2 portions of the Stomach are the Gastric Folds most apparent?
- The Pyloric Antrum
- Along the Greater Curvature of the Stomach
What forms the Stomach Bed?
- The Left Dome of the Diaphragm
- The Pancreas
- The Spleen
- The Splenic Artery
- The Left Kidney
- The Left Suprarenal Gland
- The Transverse Colon / Mesocolon