Quantitative Importance of the Pentose Phosphate Pathway Determined by Incorporation of 13C from [2 13C] and [3 13C]Glucose into TCA Cycle Intermediates and Neurotransmitter Amino Acids in Functionally Intact Neurons Eva M F HMP also known as the Pentose phosphate pathway. Consists of two irreversible oxidative rxs followed by a series of reversible The pentose phosphate pathway in health and disease Nature Metabolism Pentose Phosphate Pathway ChemTalk