Chapter 31 - Stomach and Duodenum Flashcards
What is the approximate capacity range of the equine stomach?
5 L to 15 L.
Where is the equine stomach primarily located?
On the left side of the abdomen with only the pyloric
region of the stomach to the right side of the midline. Its most
caudal component is the fundus, which lies adjacent to the 14th and 15th rib spaces
What is the most caudal component of the equine stomach?
The fundus.
What anatomical feature attaches the cardia to the diaphragm?
The gastrophrenic ligament.
What ligaments comprise the lesser omentum?
Hepatogastric and hepatoduodenal ligaments.
What artery provides blood supply to the equine stomach?
The celiac artery.
Where does venous drainage from the stomach occur?
Via gastric veins to the portal vein.
What marks the start of the duodenum?
The pylorus.
Which ducts open into major papila of the duodenum?
The bile and pancreatic ducts.
What is the role of the duodenocolic fold?
It attaches the duodenum to the transverse colon and proximal descending colon.
How many portions has the stomach?
The stomach can be divided
into several regions, including the 1. cardia at the opening of the
esophagus, the 2. fundus (which forms a blind sac), the 3. body, and
4. the pyloric region.
The greater omentum attaches along the
the greater curvature of the
stomach, and it blends into the gastrophrenic ligament
The greater omentum forms a blind potential space called the _________________(2w)
omental bursa
The entrance to this bursa is the _____________(2w)
entrance to this bursa is the epiploic foramen,
Where is located the epiploic foramen?
Between the caudate process of the liver
Right lobe of the pancreas
Borded dorsally caudal vena cava
Ventrally by portal vein
The lesse omentum connects the ____________(1w) and ____(1w) to the liver and consists of two ligaments the _____________ and _________________
The lesser omentum, which connects
the stomach and duodenum to the liver, consists of the hepatogastric
and hepatoduodenal ligaments
The duodenum makes a curving sharply toward the dorsal aspect of the abdomen this curve creates the ________ ___________ ___________(3w) within which the pancreas lies
The duodenum makes a curving sharply toward the dorsal aspect of the abdomen this curve creates the cranial duodenal flexure within which the pancreas lies
The bile and pancreatic dutcs open within the _____ _________ ____________(3w) and enter the duodenum at the ____ ______________ ___________(3w)
The bile and pancreatic ducts open within the cranial duodenal flexure, and enter the duodenum at the major duodenal papilla
What is the primary function of pepsinogen in the stomach?
To begin breaking down proteins.
What are the four regions of the stomach based on mucosal lining?
Nonglandular, cardiac, proper gastric, and pyloric mucosa.
What does the margo plicatus signify in the equine stomach?
The abrupt transition from stratified squamous mucosa to cardiac glandular mucosa.
What type of cells are found in the proper gastric mucosa?
Parietal cells and zymogen cells.
What hormone do G-cells secrete?
Gastrin.
Which type of cells secrete somatostatin?
D-cells.