Anatomy of liver new

8/8/2019 Anatomy of liver new

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Site: It lies under the diaphragm, in the righthypochondrium, epigastrium and left

hypochonderium.Shape: It is wedge shaped. It has five surfaces: superior,

inferior, anterior, posterior and right surfaces.


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Lobes of the livery It is formed of right large

and left small lobes by:a.The attachment offalciform ligament on ant.

And superior surfaces.b.fissure for lig. Venosumon inf. Surface

c.fissure for lig. teres on post.

Surface.y It also contains the caudate

and quadrate lobes.


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Relations of the livery The ia hra a ase

f ri ht l a le raare relate t the s eri r,

a teri r a ri ht s rfaces.1- Ant riors rfac is alsrelate t t. . Wall.

2- u riorsurfac is als

relate t heart,ericar i .

3- Ri t surfac is alsrelate t 7th t 11th ri s.


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Relations of the liver

4- posteriorsurface is formedof: bare area, groove for IVC,caudate lobe, fissure forligamentum venosum and

oesophageal notch.Bare areaof liver: a triangular

area related directely to thediaphragm , its base isformed by the groove forIVC, its apex is formed byright triangular ligament, itssides are the two layers ofcoronary ligament.


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Relations of the liver5- inferiorsurface: it shows

the followi feat res ai ressions:

a. Gastric i ression

B. Fiss re for li a entteres

c. Q a rate lobe

.Fossafor all bla er

e. D odenal i ressionf. Renal i ression

g. ra renal i ression

h. olic i ression


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Quadrate lobeIt is a rectangular part of the

inferior surface of liver. It isbounder by:

-inferior border of liver (inf).

-porta hepatis (post)-gall bladder fossa (on the

right)

-fissure for ligam.teres (on left

side)*It is related to: transverse

colon (ant), pylorus& 1st partof duodenum (middle) andlesser omentum (post)


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Porta hepatisy It forms the hilum of the

liver. Anteriorly, it isbounded by quadrate lobeand posteriorly, by caudatelobe and process.

yStructures passing throughit:

a. Hepatic ducts: ant. Inposition.

b. Hepatic artery: intermediate

in position.c. Portal vein: posterior inposition.

d. Lymphatics.y It gives attachment to

lesser omentum.


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Blood supply of livery It receives blood from

two sources:

1- Hepatic arteries whichdivides into right , leftbranches.

2- Portal vein: whichdivides into right , leftbranches.

y The venous drainage isby three hepatic veins

which terminate in theIVC( right, left, middle).


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P

eritoneal connections1- falciform ligament.2- upper layer of

coronary ligament.

3- lower layer ofcoronary ligament.

4- right triangularligament. Lower

triangularligament.

5- lesser omentum.


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Embryonic reminants1- Ligamentum teres:

It connects the umblicuswith the left branch ofportal vein. It representsthe obliterated umblical

vein.

2- Ligamentumvenosum:It connects the left branch

of portal vein with theIVC. . It represents theobliterated ductus

venosus.


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Hepatic segmentationy

It depends on the vasculardistribution to the liver.

y It is divided into right and leftlobes by an emaginary linepassing through IVC and fossaof gall bladder. This includecaudate , quadrate lobes as partsof left lobe.

y ight lobe is divided into ant,post and intermediatesegments.

y Left lobe is divided into lateralpart (Ant, Post) and medial partincluding porta hepatis(central), caudate (Post) andquadrate lobe (ant).


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Surface anatomy of liver1- Su eriorsurface: from

the 5th left intercostal s acein the mid clavic lar line tothe er borderof right5th costal cartilages in rightlateral lane, to the 7th ribinmid axillary line.

2- Ri t bor er:from right7th -11th ribs(mid axill. line).

3- Fundus of all bladder:ti of 9th costal cartilage .

Lt 5th

space,midaxillaryline


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Thank YouProf.: Dr. Wafaa Abdel-Rahman

Anatomy of liver new

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