Hemoglobin: Heme Synthesis and Degradation Study Notes，

Flashcards covering key terms and their definitions related to hemoglobin, heme synthesis, and bilirubin metabolism.

Hemoglobin

A protein in red blood cells that carries oxygen and gives blood its red color.

Quarternary structure

A protein structure formed by the assembly of multiple polypeptide chains.

Anemia

A condition caused by low levels of hemoglobin in the blood.

Erythrocytosis

A condition characterized by an excess of red blood cells in the blood.

Transport of Respiratory Gases

The main function of hemoglobin, involving the carrying of oxygen from lungs to tissues and carbon dioxide from tissues to lungs.

Heme

An iron-containing prosthetic group of hemoglobin, comprising a porphyrin ring and Fe²+.

Bilirubin

The end product of heme degradation, an orange-yellow pigment produced mainly from the breakdown of hemoglobin.

Jaundice

A yellow discoloration of the skin and eyes caused by increased bilirubin levels in the blood.

Pre-hepatic jaundice

A type of jaundice caused by increased hemolysis of red blood cells.

Hepatic jaundice

A type of jaundice due to liver cell damage affecting bilirubin uptake and secretion.

Post-hepatic jaundice

A type of jaundice resulting from obstruction of bile ducts.

Conjugated bilirubin

Water-soluble bilirubin that has been processed in the liver and can be excreted.

Unconjugated bilirubin

Water-insoluble bilirubin that circulates in the blood bound to albumin.

Phototherapy

A treatment for neonatal jaundice that uses blue fluorescent light to convert bilirubin.

Bilirubin metabolism

A series of steps involving the production, transport, conjugation, and excretion of bilirubin.