ANATOMY- The Liver Flashcards
What are the two ANATOMICAL sections of the Liver?
Right Hepatic Lobe
Left Hepatic Lobe
ANATOMICAL LIVER LOBES
How is the Liver Differentiated/Divided PHYSIOLOGICALLY?
What is its Significance?
- The liver is divided Physiologically Through the GALL BLADDER and IVC Fossa into the RIGHT and LEFT LOBES
- Each lobe can be Separated into FOUR Segments (TOTAL OF 8 SEGMENTS)
-Each Segment receives its individual supply from Branches of the: PORTAL VEIN, HEPATIC ARTERY and BILIARY DRAINAGE.
- This allows SEGMENTED LIVER RESECTION
PHYSIOLOGICAL LOBES/SEGMENTS
What is the CAUDATE LOBE of the Liver?
Located on the POSTERIOSUPERIOR part of the Liver
Lies between the IVC and a Fossa produced by the LIGAMENTUM VENOSUM
CAUDATE LOBE
What is the QUADRATE LOBE of the Liver?
Area Located between the GALLBLADDER and a Fossa produced by the LIGAMENTUM TERES
QUADRATE LOBE
Caudate and Quadrate Liver Lobes
What is the FALCIFORM LIGAMENT?
Double Layer of Peritoneum which attaches the Anterior Surface of the Liver to the Anterior Abdominal Wall (Peritoneum of the Rectus Abdominis)
It divides the Liver into Anatomical Right and Left Lobes
FALCIFORM LIGMAMENT
What does the FALCIFORM LIGAMENT develop from?
- Remnant of the Ventral Mesentery of the Fetus
What is Found in the Free Edge of the FALCIFORM LIGAMENT?
LIGAMENTUM TERES
Where does the LIGAMENTUM TERES come from?
Remnant of the UMBILICAL VEIN
LIGAMENTUM TERES
What Structure connects the LIVER to the UMBILICUS?
LIGAMENTUM TERES
LIGAMENTUM TERES
What Structure Attaches the LIVER to the LESSER CURVE of the Stomach?
LESSER OMENTUM
Contains the HEPATOGASTRIC LIGAMENT and HEPATODUODENAL LIGAMENT
LESSER OMENTUM
What Structures are Contained within the HEPATODUODENAL LIGAMENT?
PORTAL TRIAD
Hepatic Artery
Hepatic Portal Vein
Common Bile Duct
HEPATODUODENAL LIGAMENT
What is the PRINGLE MANOEUVRE?
Clamping the Hepatoduodenal Ligament- controlling bleeding from the liver
Which Ligament attaches the Liver to the DIAPHRAGM?
The Coronary Ligament
CORONARY LIGAMENT
What is the PORTA HEPATIS?
Deep fissure in the INFERIOR Surface of the Liver
What Structures pass through the PORTA HEPATIS?
Common Hepatic Duct
Hepatic Portal Vein
Hepatic Artery
Autonomic Nerves from the Hepatic Plexus
What Vessels form the HEPATIC PORTAL VEIN?
Splenic Vein
Superior Mesenteric Vein
Where is the Hepatic Portal Vein formed?
Posterior to the Neck of the Pancreas. (Transpyloric Plane L1)
What Structure sits POSTERIOR to the Hepatic Portal Vein?
What separates it from the Hepatic Portal Vein?
IVC
Epiploic Foramen
What is the EPIPLOIC FORAMEN?
Passage between the Greater Sac and Lesser Sac
EPIPLOIC FORAMEN
What is the arrangement of Common Hepatic Duct, Portal Vein and Hepatic Artery in the Portal Hepatis?
Common Hepatic Duct (Anteriorly and to the Right)
Hepatic Artery (Anteriorly and to the Left)
Portal Vein (Posterior)
PORTA HEPATIS
Where does the Common Hepatic Artery come from?
Coeliac Trunk, Abdominal Aorta
What are the Branches of the Common Hepatic Artery?
Right Gastric Artery
Gastroduodenal Artery
Hepatic Artery Proper
Which artery supplies the Liver by entering the Portal Hepatis- The Common Hepatic Artery or Hepatic Artery Proper?
Hepatic Artery Proper
What is the Dominant Blood Supply of the Liver?
Hepatic Portal Vein (75%)
Hepatic Artery Proper (25%)
What is the Venous Drainage of the Liver?
Hepatic Veins drain into the IVC
What is the HEPATIC PLEXUS?
Autonomic Nerve Plexus containing Sympathetic and Parasympathetic Nerve Fibres.
How many Hepatic Veins are there?
THREE MAJOR HEPATIC VEINS
-Right, Central and Left Hepatic Veins
