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Anatomy (TOPNOTCH SUPPLEMENT) > Liver > Flashcards

Flashcards in Liver Deck (33):
0

Lies mainly in the RUQ of the abdomen occupies most of the R hypochondrium, the upper epigastrium and extends into the L hypochondrium

Liver

1

Dome shaped

Anterior, superior and posterior parts

Covered with visceral peritoneum except posteriorly in the bare area

Diaphragmatic

2

Ligaments

Falciform ligament

Coronary ligament

R/L triangular ligaments

Ligamentum teres / round ligament

Ligamentum venosum

3

Remnant of umbilical vein

Between left lobe and quadrate lobe

Ligamentum teres / round ligament

4

Remnant of ductus venous

Between left lobe and caudate lobe

Ligamentum venosum

5

The median umbilical ligament is a remnant of what fetal structure?

Urachus

6

Gubernaculum

Round ligament

7

Urachus

Median umbilical ligament

8

Ductus venosum

Ligamentum venosum

9

Ductus arteriosus

Ligamentum arteriosum

10

Umbilical vein

Ligamentum teres

11

Umbilical artery

Medial umbilical ligament

12

Ductus venosus

Ligamentum venosum

13

Foramen ovale

Fossa ovalis

14

Ductus arteriosus

Ligamentum arteriosum

15

A pediatric surgeon is resecting a possible malignant mass from the liver of a neonate. The surgeon divides the round ligament during surgery. A fibrous remnant of which of the following fetal vessels is severed?

Left umbilical vein

16

Caudate lobe is located in what functional surgical segment of liver?

Medial superior

17

Segments

I - Medial superior
II - Lateral superior
III - Lateral inferior
IV - Medial inferior
V - Anterior inferior
VI - Posterior inferior
VII - Posterior superior
VIII - Anterior superior

18

APICES of triangular cross-sections of portal lobules are CENTRAL VEINS; PORTAL AREAS for the CENTERS of these lobules

Based on BILE FLOW

Portal Lobule

19

Based on blood flow

DIAMOND-SHAPED AREA of the liver whose axis is the straight line between neighboring central veins and whose short acis is the intersecting line between neighboring portal areas

Liver Acinus - ACINUS OF RAPPAPORT

20

3 zones of LIVER ACINUS

Zone 1 - closest to the portal tract and receives the most O2

Zone 2

Zone 3 - farthest and receives the least O2, most susceptible to ischemic injury

21

Examination of a 54 y/o man reveals an isolated tumor located at the Porta hepatis. The tumor most likely compresses on which structure?

Branches of PORTAL VEIN

22

Portal triad

Portal vein

Common bile duct

Hepatic artery

23

Blood supply

Portal vein - formed by union of superior mesenteric & splenic veins; 70%

Hepatic vein - branch of celiac artery; 30%

24

Liver biopsy done usually at?

R 10th ICS in MAL

25

Right ICS 8,9 or 10 just after the patient exhales

Skin --> superficial fascia --> external oblique muscle --> intercostal muscles --> costal parietal pleura --> costodiaphragmatic rcess --> diaphragmatic parietal pleura --> diaphragm --> peritoneum

Liver biopsies

26

Affects the development of intra & extrahepatic bile ducts

MC cause of persistent jaundice in infancy

SSX: jaundice, dark urine, clay-colored stool

Liver biopsy: bile duct proliferation with dilatation of bile canaliculi & bile plugs

Congenital biliary atresia

27

Granulomatous destruction of medium-sized intrahepatic bile ducts

Mitochondrial pyruvate dehydrogenase autoantibodies

Primary biliary cirrhosis

28

Inflammation, fibrosis & segmental dilatation of both intra & extrahepatic bile ducts

Often in association with chronic ulcerative colitis

Primary sclerosing cholangitis

29

Removing one of the liver segments (5 total segments) or one of the liver subsegments (9 total subsegments)

Hepatic veins as landmark, mark the periphery of the liver segment

Surgical resection

30

Divided into R & L lobe by interlobar fissure

Secured in position by attachment of hepatic veins to the IVC (allows very little rotation of the liver during surgery)

Liver

31

Left lobe contains

Calcified ligament

Ligamentum teres (remnant of umbilical vein) on inferior border

32

Located on diaphragmatic surface

No peritoneum

Bare area of the liver