Some Quantitative Studies on the Noradrenaline Content in the Cell Bodies and Terminals of a Sympathetic Adrenergic Neuron System

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Abstract
The noradrenaline (NA) content of one pair of the cervical sympathetic ganglia of cat was estimated. In the same cats the area innervated by these ganglia, i.e the head and neck tissues, were also examined for NA. The ganglia were found to contain 104 ng NA per pair and the innervated tissue 32 μg on the average. The ratio between cell bodies and terminals for NA content was thus about 1: 300. Using results from earlier studies of the NA content per varicosity and values of the number of cells in these ganglia obtained by other investigators, the average total length of the terminal system of each neuron was calculated to be in the order of 10 cm.