Structure of Heme Heme is a ferro-proto-porphyrin. Heme = Protoporphyrin IX ring + Iron (Fe) in center Protoporphyrin IX = porphyrin with attachment to 4 Methyl, 2 Propionyl and 2 Vinyl groups. Porphyrin = Cyclic structure with 4 pyrrole rings Pyrrole rings are derived from Porphobilinogen (PBG) Hydroxymethylbilane = Linear…
Tag: Hematology
Clinical Skills and Approaches 
Pallor
Synonyms: Paleness Definition of Pallor Pallor is the paleness of skin and mucous membranes, due to the reduced amount of oxyhemoglobin or decreased peripheral perfusion. Sites to look for pallor Lower palpebral conjunctiva Tip and dorsum of the tongue Soft palate Nail beds Palmar or plantar creases General body skin…