Liver Structure and Function Flashcards Preview

07. Year 2: Alimentary System > Liver Structure and Function > Flashcards

Flashcards in Liver Structure and Function Deck (61)
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1

What is the largest organ in the body?

The liver which weights about 1.4kg

2

Where is the liver located within the abdomen?

Upper right quadrant of abdomen (tucked against inferior surface of diaphragm)

3

How many lobes does the liver contain?

4

4

What are the 4 lobes of the liver?

Left lobe

Right lobe

Caudate lobe

Quadrate lobe

5

On what surface is the portal of the liver?

Posterior

6

Whats enters and exits the liver through the porta?

Blood vessels (hepatic portal vein, hepatic artery)

Lymphatic vessels

Ducts (right/left hepatic ducts forming common hepatic duct)

Nerves (hepatic nerve plexus)

7

Explain the anastomosis of the common hepatic duct to reach the spincter of Oddi?

Common hepatic duct joined by cystic duct to form common bile duct

Common bile duct joined by pancreatic duct to form major duodenal papilla

8

What does the coronary ligament attach the liver to?

Inferior surface of diaphragm

9

What is the liver covered by?

Connective tissue capsule and visceral peritoneum (except for bare area)

10

Where is the bare area of the liver?

Diaphragmatic surface surrounded by coronary ligament

11

What does the connective tissue surrounding the liver become at the porta?

Branching network of septa into the body of the liver to give support

12

What doe vessels, ducts and nerves follow throughout the liver?

Septa

13

What does the septa divide the liver into?

Hexagonal lobules

14

What forms the portal triad?

Hepatic portal vein, hepatic artery and hepatic duct

15

Where are portal triads found?

At each corner of hexagonal lobule (also with nerves and lymph vessels)

16

What is at the centre of each lobule?

Central veins

17

What do central veins of lobules go onto become?

Hepatic veins then inferior vena cava

18

Explain the surroundings of central veins of lobules?

Hepatic cords radiate out of central veins

Cords composed of hepatocytes

Bile canaliculus lies between cells and within each cord

Spaces between hepatic cords are called hepatic sinusoids

19

What are hepatic cords that radiate from central vein composed of?

Hepatocytes

20

What are spaces between hepatic cords called?

Hepatic sinusoids

21

What are hepatic sinusoids?

Blood channels

22

What is the direction of blood and bile from the central vein of lobules?

Blood travels towards the central vein

Bile travels away from the central vein

23

What kind of blood is made once the hepatic artery and hepatic portal vein mix together?

Blood high with oxygen and nutrient content

24

Why is glucose stored in the liver as glycogen?

Glucose would be a problem osmotically

25

What is the alimentary role of the liver?

Produce and secrete bile

26

What does the hepatic artery form before entering hepatic sinusoids then the central veins?

Hepatic portal vein

27

What would we not be able to do without bile?

Digest fats

28

What are the 6 components of bile?

Bile acids

Lecithin

Cholesterol

Bile pigments

Toxic metals

Bicarbonate

29

Which of the 6 components of bile are not synthesised in the liver?

Toxic metals

Bicarbonate

30

What are bile pigments broken down from?

Haemoglobin from old/damaged erythrocytes