Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

16 Questions

0 Views

Free Hemoglobin Metabolism

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary role of hemopexin in the handling of free heme?

To prevent the loss of iron in urine

To metabolize the heme-hemopexin complex in the liver

To bind free heme and transport it to the liver (correct)

To store the iron from the heme-hemopexin complex bound to ferritin

What is the main purpose of haptoglobin in the handling of free hemoglobin?

To prevent major iron losses

To metabolize the hemoglobin-haptoglobin complex in the liver and spleen (correct)

To complex free heme

To scavenge iron

What is the purpose of the enterohepatic circulation in bilirubin metabolism?

To conjugate bilirubin in the liver

To recycle bilirubin back to the liver after it has been excreted in the bile (correct)

To transport bilirubin in the plasma

To facilitate the hepatic uptake of bilirubin

What is the purpose of the conjugation step in hepatic bilirubin transport?

To convert bilirubin into a more water-soluble form for biliary excretion Signup and view all the answers

What is the purpose of methemalbumin in the handling of free heme?

To form a complex of oxidized heme and albumin Signup and view all the answers

What type of bilirubin does total bilirubin measure?

Indirect bilirubin Signup and view all the answers

Which enzyme is responsible for the conjugation of bilirubin?

Uridine diphosphate glucuronyl transferase Signup and view all the answers

What occurs nonenzymatically to convert conjugated bilirubin back to unconjugated bilirubin?

Hydrolysis in the duodenum and jejunum Signup and view all the answers

What reaches adult levels by 3-5 days regarding bilirubin transportation?

Ligandins Signup and view all the answers

In which organ is β glucuronidase found in high concentration?

Duodenum Signup and view all the answers

What is the main purpose of hemopexin in the handling of free heme?

Bind free heme for uptake by the liver Signup and view all the answers

What happens to conjugated bilirubin in bilirubin metabolism?

Converted to stercobilinogen by bacteria Signup and view all the answers

How is unconjugated bilirubin transported in plasma?

Transported by albumin to the liver Signup and view all the answers

What is the function of methemalbumin in the handling of free heme?

Complex oxidized heme with albumin Signup and view all the answers

Where does the majority of bilirubin come from in normal adults?

Red blood cell degradation Signup and view all the answers

What is the fate of stercobilin produced from bilirubin metabolism?

Re-absorption through enterohepatic circulation Signup and view all the answers