Lecture 19 Digestive Glands Flashcards
Where is liver located?
upper right quadrant
What is the largest internal organ?
- liver
What incases/protects the liver?
- ribs and costal cartilages
Can you easily palpate the liver?
- no unless patient takes deep breath
- if you can palpate without deep inspiration it has become enlarged
What splits the left lobe from right lobe?
- double layered peritoneum called the falciform ligament
Ligamentum teres
- vessels pass through it as fetus
- umbilical vein travels through it
Gallbladder
- gut derivative
- at some point in development has mesentery
- adheres to surface of the liver
How does the gallbladder lose its mesentary
- it adheres to the anterior surface of the liver
- still considered mesenteric
The liver has 4 lobes
- left lobe
- right lobe
- caudate lobe
- quadrate lobe
What fissures run front to back?
- sagittal fissures
What connects the sagittal fissures?
- horizontal fissure
What is the anterior lobe of the liver that lies between the two sagittal fissures?
-quadrate lobe
What is the posterior lobe of the liver that lies between the two sagittal fissures?
- caudate lobe`
Ligamentum teres
- lies in left sagittal fissure
- obliterated after birth
Ligamentum venosum and root of lesser omentum
- lies in posterior left sagittal fissure
-
Gall bladder
- anterior right sagittal fissure
- quadrate lobe
Where does the inferior vena cava pass in the liver?
- posterior sagittal fissure
Porta hepatis
- region around h. fissure that is doorway to liver
- bile exiting
- blood entering
- nerve supply and lymphatics pass through
- horizontal fissure
What part of liver makes contact with the post. abdominal wall?
- bare area of liver
- this part of liver is sec. retroperitoneal
Is the liver retroperitoneal or mesenteric?
- it is both
All peritoneum of the liver is considered?
- visceral
What mesentery suspends the stomach?
- lesser omentum
Where is omental foramen?
- right wall of lesser sac
what ligament of the liver lines of with the midline of the body?
- falciform ligament
Coronary ligament
- cut margin of visceral peritoneum that goes around the margins of bare area
Lymph nodes/vessels
- tend to run alongside blood supply vessels in abdomen
Bare area and diaphragm lymph system
- when they come together they from tiny channels that carry lymph from liver to thoracic lymph nodes
- important route for metastasis of cancer
Lung cancer
- can easily travel to liver through diaphragm into bare area of liver
Functional left side bile drainage of liver
- left
- quadrate
- caudate
Functional right side bile drainage of liver
- right side
Functional left side arterial blood supply of liver
- left
- quadrate
- caudate
Functional right side arterial blood supply of liver
- right
- quadrate lobes
What lobe of liver has arterial blood supply from both the left and right side?
- quadrate
What artery supplies the liver?
- the left and right hepatic arteries that branch off of the celiac artery
What artery supplies the gall blader?
- cystic artery
Approximate position of gall bladder
-intersection of lateral margin of rectus abdominus muscle and lower margin of costal margin
cystic duct
- drainage from gall bladder
Common bile duct
- comes into second section of duodenum
- where bile goes
Cholesterol stones are found where?
- gall bladder
Portal vein
- carries venous blood into liver from the intestines
- posterior to common hepatic artery and common bile duct
Does the majority of the pancreas lie inferior or posterior to the stomach?
posterior
Pancreas functions
- manufactures insulin and inserts it into blood
- pancreatic juices (exocrine)
Is the pancreas 2nd retroperitoneal?
- Yes
Hepatopacreatic ampulla (of Vater)
- where common bile duct and
- main pancreatic duct merge
What blood supplies the head and neck of the pancreas?
- superior PD artery (celiac)
What are the body and tail of the pancreas supplied by?
- splenic artery (celiac)
What the head and uncinate process of the pancreas supplied by?
inferior PD aa (superior mesenteric)
What part of the pancreas is mesenteric?
- the tail
What part or parts of the pancreas is secondarily retroperitoneal?
- head, body, and neck
