Summary
Adrenergic neurons, studied by the fluorescent method for norepinephrine, are widely distributed throughout the male urinary and seminal tract organs. They occur both within ganglia and outside of ganglia as isolated cells.
The extraganglionic cells are classified according to their location as paravascular, epineural, and terminal. The paravascular and epineural ganglion cells are morphologically similar to the cells found within ganglia, while the terminal ganglion cells differ mainly in being smaller and having multiple divergent axonal processes.
The existence of extraganglionic as well as ganglionic adrenergic cells within the innervated organs adds further support to, and extends the concept of the short adrenergic neuron.
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Supported in part by Grant No. HE 10465 from the USPHS.
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El-Badawi, A., Schenk, E.A. The peripheral adrenergic innervation apparatus. Z. Zellforsch. 87, 218–225 (1968). https://doi.org/10.1007/BF00319721
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DOI: https://doi.org/10.1007/BF00319721