Carnivore GIT Flashcards
What are the four layers of the carnivore GIT?
Mucosa, submucosa, muscularis externa, serosa/adventitia
Where does the esophagus lay in relation to the trachea?
To the left and slightly dorsal
What main nerve innervates the esophagus?
Vagus nerve
Where does the terminal esophagus drain into?
Portal system
What stimulates peristalsis?
External nerves and distension of the esophagus/stomach/intestines
What are three common sites of esophageal obstruction?
Thoracic inlet, over heart base, entrance into diaphragm
What is the vascular ring anomaly?
When a major blood vessel is malformed and constricts the esophagus, only allowing liquid through
What general organs is the carnivore digestive tract made of?
Stomach, duodenum, jejunum, ileum, cecum, ascending colon, transverse colon, descending colon, rectum, spleen, pancreas (Along with spleen are the major secretory organs of carnivore digestive tract)
What is the name of the layer of peritoneum that lines the body wall?
Parietal peritoneum
What is the name of the layer of peritoneum that lines the organs?
Visceral peritoneum, encloses organs in two folds of peritoneum
What are the peritoneal organs?
Stomach, liver, spleen, pancreas, small intestine, large intestine, bladder, reproductive
What are the retroperitoneal organs?
Kidneys, adrenal glands
What is “mesentery?”
Folds of peritoneum that enclose organs
What two mesenteric layer make up the greater mesentery?
Mesoileum and mesojejunum
What other mesenteric layers are present in the body besides greater mesentery?
Mesoduodenum, mesocolon, mesorectum, mesogastrium (Omentum)
What is the name of the sac that is created by two folds of the greater omentum?
Omental bursa
What is the name of the channel in the greater omentum that leads from the liver to the sac of the greater omentum?
Epiploic foramen
How does the digestive system get the main supply of its blood?
Dorsal aorta
Where does the majority of the blood from the liver and terminal rectum drain into?
Caudal vena cava
Where does the majority of the blood from the terminal esophagus, spleen, pancreas, and proximal rectum drain into?
Hepatic portal system to the liver
What is the only vessel that does not drain into the heart?
Hepatic portal vein, drains to liver
What are the three branches of the celiac artery?
Left gastric artery, splenic artery, hepatic artery
What three branches of the aorta supply the entire digestive tract?
Celiac artery, cranial mesenteric artery, caudal mesenteric artery
What is the ductus venosus?
A portosystemic shunt that is present when an animal is young but should close off as an adult (Sometimes does not, causes problems), causes blood to bypass the liver