Liver power point Flashcards
Liver physical description
largest organ in the body, next to the skin
weighs approx 1500 grams in the adult
Liver location
occupies almost all of the right hypochondrium, great part of epigastrium and left hypochondrium as far as the mammillary line
inferior to the diaphragm
posterior border in contact with the rt kidney and IVC
aorta lies posterior to the left lobe
liver covering
tissue known as Glisson’s capsule
Couinad’s anatomy
divides liver into sectoins based on main lobar fissure and vascular landmarks
divides into 8 surgical sections
Subphrenic space
subphrenic spacebetween the liver and diaphragm is a common site fo abcess formation
right subhepatic space
includes morrisons pouch
a common site for periotoneal fluid or blood to collect
lesser sac
enclosed portion of the peritonial space posterior to the liver and stomach is another site for abcess formation
embryonic repsonibility
hemopoiesis
type of organ
intraperitoneal organ
liver basic anatomy
3 helatic lobes
each lobe further divided into thousands of liver lobules
liver lobules
contain kepatocytes
biliary epitheleal cells
kupfer cells
each lobule surrounded by portal triads, small branches of PF, BD and HA
Lobes of the liver
Right
Left
Caudate
Separates anterior and posterior of right lobe
Right hepatic vein
right intersegmental ligament
separates lateral and medial segment of the left lobe of the liver
left hepatic vein
left intersenmental fissure
ligamentum teres
falciform ligament
separates the right and left lobe
middle hepatic vein
main lobar fissure
gallbladder fossa
Right lobe of liver
largest lobe
contains 3 fossae: porta hepatis, gallbladder and IVC
may contain riedels lobe
Riedels lobe
can sometimes be seen as an anterior projection of the liver sometimes extending down the iliac crest
Left Lobe
size varies from patient to patient, really effects the quality of scanning the pancreas
found just under the xiphoid process
Falcifomr ligament
attaches the liver to the diaphragm and anterior abd wall
contains the ligamentum teres, triangular or rounded hyperechoic structure which is the termination of the ligament
caudate lobe
smallest lobe
inferior to the ligamentum venosum
superior to the IVC
LIgaments and fissures
Main lobar fissure
Falciform Ligament
ligamentum teres
ligamentum venosum
main lobar fissure
boundry between right and left lobes
longitudinal scan may be seen as a hyperechoic line extending from the portal vein to the neck of the gallbladder
falciform ligament
extends from the umbilicus to the diaphragm,
contains the ligamentum teres
ligamentum teres
appears as a bright echogenic triangle on a transverse scan
separates the medial and lateral segments of the left lobe