Abdomen and Pelvis: Walls, Peritonuem, Stomach, Intestines Flashcards
What major structures make up the GI tract?
- Stomach
- small intestine
- large intestine
The small intestine is divided into what three sections?
- duodenum
- jejunum
- ileum
The large intestine is divided into what 4 parts?
- cecum
- colon
- rectum
- anus
The colon is divided into what three sections?
- ascending colon
- trnsverse colon
- descending colon
Is the entire digestive system encompassed by the GI tract?
NO
- also includes oral cavity, pharynx, esophagus
What are the four tunics (coats) of the GI tract?
- serous coat
- muscular coat
- submucous coat
- mucous coat
Which coat of the GI tract is the visceral peritoneum?
serous coat
Which coat of the GI tract has longitudinal and circular layers?
Muscular coat
List the parts of the stomach starting with esophagus.
- esophagus
- cardia
- fundus
- body
- pyloric part (antrum and canal)
- pylorus (exit)
What is the pylorus?
Enlarged smooth muscle that regulates the pass of content from stomach to small intestine.
What is an internal vomit? Why is it dangerous?
- occurs when the content gets in the esophagus and not outside the body
- dangerous because it can irritate esophagus and cause esophageal cancer
Define vomit in general.
Involuntary forceful expulsion of content from the stomach to the exterior of the body through the mouth
What is the signifiance of dogs having a large stomach capacity?
They are descendants of wolves
The internal border of the pyloric antrum is formed by what?
lesser curvature of the stomach
The greater curvature of the stomach points _____ and to the _____.
caudal, left
The fundus is located to the _____, at the level of what?
left, at the level of the left hypochondrium
The pyloric part and pylorus are located to the _____.
right
What is the reason GDV can occur in dogs?
There is no big ligament holding stomach in place
The lesser curvature of the stomach points ____ and to the ____.
cranial, right
What six structures arise from the dorsal mesentery?
- dorsal mesogastrium (greater omentum)
- mesoduodenum
- mesojejunum
- mesoileum
- mesocolon
- mesorectum
What three structures arise from the ventral mesentery?
- ventral mesogastrium (lesser omentum)
- falciform ligament
- median ligament of the bladder
The greater omentum courses from the ____ body wall to ______ of the stomach.
dorsal, greater curvature
The greater omentum is split into what two sections?
- superficial leaf
- deep leaf
The superficial leaf of the greater omentum contains what organ?
spleen
The deep leaf of the greater omentum contains what organ?
left lobe of pancreaas
True or false: The greater omentum stores a lot of fat and is delicate.
True
What connects the omental bursa with the peritoneal cavity in the right side of the abdomen?
omental (epiploic) foramen
List the six parts of the duodenum in order.
- cranial part
- cranial duodenal flexure
- descending part
- caudal duodenal flexure
- ascending part
- duodenojejunal flexure
What is the larger portion of the duodenum that you will have to manipulate during a spay procedure?
descending part
The major duodenal papilla are the openings to what two ducts?
- bile duct
- pancreatic duct
The minor duodenal papilla is the opening to what duct?
accessory pancreatic duct
True or false: Vegetarians have a longer jejunum compared to people who eat protein/meat.
True
The ileum is defined by what two structures?
- antimesenteric ileal artery
- ileocecal fold
What is the cecocolic orifice?
opening between the cecum and the ascending colon
What is the ileocecal fold?
plica of peritoneum between the cecum and ileum
List the five parts of the colon in order.
- ascending colon
- right colic flexure
- transverse colon
- left colic flexure
- descending colon
The mesentery is split into what five portions?
- mesoduodenum
- mesojejunum
- mesoileum
- mesocolon
- mesorectum
The external anal sphincter is controlled by what?
somatic nervous system
The internal anal sphincter is controlled by what?
autonomic nervous system
What is the columnar zone of the anus?
transitional tissue between mucosa and skin
What three organs are in the right cranial quadrant of the abdomen?
- liver
- transverse colon
- ascending colon