GIT Flashcards
4 Stages of GI tract
Ingestion, Digestion, Absorption, and Excretion
Types of Ingestion
Prehension, Mastication, Deglutition
Types of digestion
Chemical and Mechanical
Absorption types
Compaction and Peristalsis
Parts of the alimentary digestive tract
Oral cavity, pharynx, esophagus, stomach, small intestines, large intestines
Parts of accessory organs of alimentary tract
Teeth, tongue, salivary glands, liver, pancreas, gallbladder
3 places where esophagus is commonly obstructed
Esophageal hiatus of diaphragm, base of heart, and thoracic inlet
Function of the stomach
To store food for churning and to move chyme to small intestine
Position of the empty stomach in the body
Left side of abdomen inside costal arch
Position of full stomach in the body
Moves caudally and makes contact with ventral body wall
In a normal, healthy dog, is the stomach palpable
No
4 parts of stomach
Cardia, fundus, body, and pylorus
Function of the pyloric region of the stomach
Joins body to descending duodenum
3 Parts of pylorus (in order)
Pyloric antrum, Pyloric Sphincter, and Pyloric canal
Which two sections of the stomach have gastric mucus
Cardiac and Pyloric
What types of gastric mucosa does the proper gastric region have
Gastric juice (Pepsin and HCl)
When is the only time rugae are present
Stomach is empty
What Stomach injury is common in German Shepherd and Great Danes
Gastric Dilation Volvulus (GDV)
Overview of Gastric Dilation Volvulus
Dilation that occurs with accumulation of gas, fluid, and food in the stomach. Happens within 2 hours of eating
Clinical Signs of GDV
Abdominal distention, restlessness, abdominal pain, retching, hypersalivation
How many degrees does the stomach rotate in GDV
90-360
During GDV, where is the pylorus
Left of the midline
During GDV, what happens to the duodenum
It gets trapped between distal esophagus and stomach
True or False: During GDV the gastric contents ferment and stomach dilates
True
During GDV what happens to the Cd. Vena cava and portal vein
Both are compressed, reducing venous return to heart
What other 4 conditions can GDV cause
Hypovolemic shock, Metabolic Acidosis, hypotension, and tissue hypoxia
What issue does GDV cause in the liver
Endotoxemia; liver can’t clear gram negative endotoxins
3 treatments for GDV
SubQ fluids, Orogastric tube, and Gastrocentesis using a 18 gauge needle on the RIGHT side of the abdomen
Function of the plicae circularis
To increase surface area of small intestine
(Ex. Microvilli and Villi)
Function of the small intestine
Major digestive organ; main absorption site
Location of the cranial duodenal flexure
Right of midline at end of cranial portion of the duodenum
Location of descending duodenum
Right side of midline
Location of caudal duodenal flexure
Near pelvic midline
Location of ascending duodenum
Left side of midline
Flexure between duodenum and jejunum is called
Duodenojujenal flexure
What occurs in the duodenum
Enzymatic digestion and absorption
What attaches duodenum to abdominal wall
Mesoduodenum
Location of the liver
Between diaphragm and viscera
Liver lobes
Right lateral, right medial, quadrate, left medial, left lateral and Caudate lobe (caudate and papillary process)
Which liver lobe contains renal impression of the right kidney
Caudate process of caudate lobe
Function of the gallbladder
Temporary bile storage
Which two lobes of the liver surround the gallbladder
Right medial and quadrate
What ducts drain into bile duct
Hepatic ducts
Which duct flows upward into gallbladder
Cystic duct
Cats don’t have a ______ duct
Accessory bile duct
What two structures make up the common bile duct
Bile and pancreatic ducts
Describe the inactive digestion period in the bile duct
Papilla closed by smooth m. Sphincter; bile flows upwards through cystic duct
Describe the active digestion period in the bile duct
Hormones open sphincter; cystic contractions forces bile out gallbladder
What two functions does the pancreas have
Exocrine and endocrine
Exocrine secretions of the pancreas are
Lipase and amylase
Endocrine secretions of the pancreas are
Glucagon and gastrin
Location of the body of the pancreas
By the pylorus of the stomach
Location of the left lobe of the pancreas
Greater curvature of the stomach
Location of the right lobe of the pancreas
Descending duodenum
Cats have large ______ ducts
Pancreatic ducts
Dogs have large_____ ducts
Accessory
Accessory ducts open into
Minor duodenal papilla
Pancreatic duct opens into
Major duodenal papilla
Cats usually have how many common bile ducts
1
What forms the root of mesentery and contains the cranial mesenteric artery
Mesojejunoileum
The mesojejunoileum can herniate through the
Epiploic foramen (Clin Sig)
List the 4 boundaries of the jejunum and ileum
Dorsally- caudate lobe
Dorsally- caudal vena cava
Ventrally-portal vein
Cranially-liver
Jejunum and ileum lead into the ______ bursa
Omental bursa
Ileum contains ________ blood vessels
Anti-mesenteric blood vessels
What is the name of the orifice between the ileum and colon
Ileocolic orifice