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Flashcards in Liver Deck (130)
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1

What is the largest parenchymal organ in the body?

Liver

2

What does parenchymal mean?

has tissue

3

The primitive gut is formed during the _____ week of embryonic life and is composed of these 3 parts:

4th
Foregut
Midgut
Hindgut

4

The _____ veins bring oxygenated blood from the embryonic portion of the placenta to the embryonic heart.

umbilical veins

5

The _____ veins return blood from the yolk sac to the heart.

vitelline veins

6

Vitelline veins eventually become what vessels?

portal veins

7

The liver comes from what part of the primitive gut?

the foregut

8

In prenatal live, oxygenated blood from the placenta is carried by the _____ _____ vein and _____ _____ to the IVC and _____ atrium.

left umbilical vein
ductus venosus
right atrium

9

List the various liver structures (6)

1) portal veins
2) hepatic veins
3) arteries
4) ducts
5) hepatic ligaments
6) hepatic fissures

10

The liver tissue sequentially moves into the _____ veins and then the _____ veins.

vitelline veins
umbilical veins

11

As the liver tissue moves into the vitelline veins, their midsection becomes _____, whereas their _____ ends become the _____ _____ veins and their _____ ends become the _____ _____ veins.

capillarized
caudal ends become the primitive portal veins
cranial ends become the early hepatic veins

12

After the right umbilical vein and part of the left umbilical vein degenerate during fetal development, the remaining left umbilical vein carries all the blood from the _____ to the _____.

placenta
fetus

13

An umbilical cord should contain _____ arter(ies) and _____ vein(s).

2 arteries
1 vein

14

The ductus venosus develops as a large shunt within the liver and allows blood to connect from the _____ _____ to the baby's _____, by bypassing the _____.

umbilical cord
heart (right side)
liver

15

Direction of fetal circulation:

Umbilical Vein (ligamentum teres)
l
l
\/
?
l
l
\/
? (AKA ?)
l
l
\/
?

Umbilical Vein (ligamentum teres)
l
l
\/
Left Portal Vein
l
l
\/
Ductus Venosus (AKA Ligamentum Venosum)
l
l
\/
IVC

16

The _____ _____ closes shortly after birth, when the umbilical cord is cut and blood flowing between the mother and fetus stops.

ductus venosus

17

The _____ _____ is a remnant of the ductus venosus. It runs from the _____ to the _____, separating the left LLL from the caudate lobe of the liver.

ligamentum venosum
LPV
IVC

18

The liver is covered by a thin connective tissue called

Glisson's capsule

19

Glisson's capsule covers the entire liver except the "_____ _____" near the dome of the liver, on the posterior surface of the RLL.

"bare area"

20

Glisson's capsule is at its thickest around the _____ and the _____.

IVC
porta hepatis

21

These macrophages remove bacteria, foreign matter and weakened blood cells from the liver sinusoids (blood in the sinusoids).

Kupffer cells

22

T or F? Kupffer cells are around at all times, they just "hang out" if no infection.

True

23

The hepatic parenchyma is composed of _____ (type of cell) dispersed with Kupffer cells and organized into lobules approximately 1 x 2 mm in size.

hepatocytes

24

Typically about _____ million of these are found in the liver, and they are the functional units of the liver.

1 million
lobules

25

The liver occupies a major portion of the _____ _____ (region of abdomen).

right hypochondrium

26

Inferiorly, the liver extends into the

epigastrium

27

Laterally, the liver extends into the

left hypochondrium

28

Superiorly, the liver extends into the

dome of the diaphragm

29

Posteriorly, the liver borders the

bony lumbar region of the muscular posterior abdominal wall

30

The 5 main liver functions are

1) Bile drainage
2) Blood glucose regulation
3) Synthesis/Storage of amino acids, proteins, vitamins, and fats
4) Detoxification
5) Blood circulation/filtration