SGS8 Liver Quiz

.    Which ONE of the following statements regarding the human 

       liver  is  correct?

• An isolated liver weighs about 2.5 kg on average.

• The portal spaces contain branches of the hepatic artery.

• The hepatic artery can provide up to 80% of liver blood flow.

• The volume of blood entering the liver is equal to the volume of blood leaving the liver.

• The pressure in the portal vein is normally only 20 mmHg.

Which of the following statements about the pathophysiology

      of the liver are correct?

• First-pass metabolism is increased in the elderly.

• The liver can expand to accommodate additional blood in right heart failure.

• Ascites is common once portal hypertension occurs.

• Hypoalbuminaemia is an important initiating factor in cirrhotic ascites.

• Acidosis is common in acute liver failure.

Which ONE of the following statements regarding the human liver

        is INCORRECT?

• The liver secretes about 500-1500 ml of bile per day.

• Only one half of bile comes from the hepatocytes.

• .The level of bile salts in portal blood is the chief controller of duct and hepatocyte biliary secretion.

• Bile is concentrated five to twenty-fold in the gallbladder.

• Gallbladder bile is more acidic than hepatic bile.

Compared to hepatic bile, gallbladder bile will differ in that its:

• Bile concentration will be less.

• Chloride concentration will be higher.

• Osmolarity will be greater.

• Cholesterol concentration will be higher.

• Percentage of water will be greater.

Which ONE of the following statements is CORRECT? Surface

        markings of the gall bladder are given by:

• the intersection of the costal margin and line alba

• the tip of the right 12th rib

• the angle between the right costal margin and the linea

           semilunaris

• the xiphisternum

• the right inguinal region

Which ONE of the following statements regarding the blood supply

        of the liver is INCORRECT?

• 75% of the blood entering the liver is venous blood from the portal

           vein

• 25% of the blood supply to the liver is via the hepatic artery

          (oxygenated)

• Portal venous blood is rich in nutrients but is deoxygenated.

• Terminal branches of the portal vein and hepatic artery empty

           together and mix as they enter the liver

• All blood exits the liver via the azygos vein and returns to the

           heart, now deoxygenated, detoxified, and containing normal

           (homeostatic) nutrient levels

Chronic hepatitis C infection is:

• Commonly associated with elevation of the transaminases greater

           than 10 times the upper limit of normal

• Mostly acquired through sexual transmission

• Incurable

• A common indication for liver transplantation

• Caused by a DNA virus

Which ONE of the following statements regarding cirrhosis is  

      LEAST CORRECT? Cirrhosis is:

• Associated with extensive fibrosis

• Associated with regenerative nodule formation

• Commonly due to hepatitis B infection

• Commonly asymptomatic

• Commonly a cause of enlargement of the liver

Which of the following is TRUE regarding the liver and gall bladder?

 

• The coronary ligament attaches the liver to the greater omentum.

• The bare area of the liver is not covered by the fibrous liver capsule

• The gall bladder contracts in response to a hormone produced in the duodenum.

• The gall bladder has an arterial blood supply from the left hepatic artery.

• Shoulder tip pain indicates irritation of the sub-diaphragmatic peritoneum.