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Abd & Superficial Structures 1 > Liver > Flashcards

Liver Flashcards

1
Q

the liver is what

A

the largest organ

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2
Q

located in which quadrant and region

A

RUQ, right hypochondrium, epigastrium, possibly left hypochondrium

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3
Q

bounded superiorly by what

A

diaphragm

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4
Q

most of the liver lies beneath the

A

right costal margin

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5
Q

what surfaces of the liver are in contact with the diaphragm

A

superior
anterior
portions of the posterior

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6
Q

where does the inferior surface have contact with

A

upper abdominal organs

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7
Q

what indents the posterior surface

A

right kidney

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8
Q

what major vessel is directly posterior to the liver

A

IVC

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9
Q

why is noting the position of the liver important

A

pathology may alter its shape and position

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10
Q

displacement of the liver caudally may be due to

A

tumors
cirrhosis
subphrenic abscesses

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11
Q

displacement of the liver cranially may be due to

A

abdominal tumor
ascites
excessive dilation of the colon

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12
Q

does the liver vary in shape and size depending on the body habitus of the patient

A

yes

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13
Q

generally how much bigger is the right lobe compared to the left

A

2-3 times

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14
Q

the right lobe extends further

A

inferiorly

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15
Q

the left lobe will vary in

A

size and shape

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16
Q

what is often the appearance of the left lobe

A

wedge shape

flag shape

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17
Q

what is the average weight of a male liver

A

1400-1600 g

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18
Q

what is the average weight of the female liver

A

1200-1400 g

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19
Q

the liver is enlarged if the right lobe extends past where

A

below the lower pole of the right kidney

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20
Q

what is the exception to liver enlargement

A

reidels lobe

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21
Q

what is the normal length mesurement of the liver

A

= 15.5cm

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22
Q

where is the length measurement taken

A

midclavicular line

from diaphragm to inferior edge

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23
Q

what is the normal AP measurement of the liver

A

8.1cm +/- 1.9cm

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24
Q

where is the AP measurement taken

A

midpoint of the length measurement

25
Q

what is the normal ratio of the caudate to right lobe ratio

A

<0.65

26
Q

where is the caudate/right lobe ratio taken

A

subcostal in a true transverse plane

27
Q

why is a caduate to right lobe ratio used

A

for liver cirrhosis

28
Q

what is a reidels lobe

A

tongue-like extension of the inferior tip of the right lobe of the liver

29
Q

when is a reidels lobe usually identified

A

in slim females

30
Q

what are the two methods of dividing the liver

A

anatomical

functional

31
Q

what is the method of dividing the liver that is used in ultrasound

A

functional

32
Q

what is the anatomical method based on

A

external markings

33
Q

what are the borders of the anatomical method

A

falciform ligament

“h” configuration

34
Q

what divides the right and left lobes anteriorly using the anatomical method

A

falciform ligament

35
Q

in the anatomical method where does the caudate lobe lie between

A

IVC
ligamentum venosum
portal vein

36
Q

in the anatomical method where defines the quadrate lobe

A

porta hepatis
gallbladder fossa
ligamentum teres

37
Q

what is the functional method based on

A

blood supply

bilary drainage

38
Q

what are the significant landmarks of the functional method

A

ligaments
fissures
gallbladder

39
Q

the functional method divides the liver into

A

3 lobes

4 segments

40
Q

in the functional method the right lobe is divided into what segments

A

anterior

posterior

41
Q

in the functional method the left lobe is divided into what segments

A

medial

lateral

42
Q

what is another name for the medial segment in the functional method

A

quadrate

43
Q

what are the three lobes the functional method divides into

A

right
left
caudate

44
Q

in the functional method the right and left portal veins course how through the segements

A

within

45
Q

what is another way of saying coursing within the segments

A

intrasegmental

46
Q

in the functional method the right and left hepatic veins course how through the segments and lobes

A

between

47
Q

what are the other ways to say course between the lobes and segments

A

intersegmental

interlobar

48
Q

the right lobe is seperated from the left lobe by what fissure

A

main lobar

49
Q

superiorly which vessel courses through the MLF

A

middle hepatic vein

50
Q

the right lobe is divided into anterior and posterior segments by which fissure

A

right intersegemental

51
Q

what vessels course within the right intersegmental fissure

A

right hepatic and portal vein

52
Q

the anterior right portal vein courses within what portion of the liver

A

anterior right lobe

53
Q

the posterior right portal vein courses within what portion of the liver

A

posterior right lobe

54
Q

the left lobe is divided into medial and lateral segments by which fissure

A

left intersegmental

55
Q

which vessels course with the left intersegmental fissure

A

left hepatic vein

ascending left portal vein

56
Q

the medial left lobe is the the segment that was which considered which lobe

A

quadrate lobe

57
Q

the medial left portal vein courses within what portion of the liver

A

medial left lobe

58
Q

the lateral left portal vein courses within what portion of the liver

A

lateral left lobe

Abd & Superficial Structures 1 (10 decks)

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