神経分泌細胞軸索にみられるシナプス(予報)

概要

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In the hilar region of the median eminence (Fig. 1) of the frog, Rana catesbeiana, many synapses characterized by clusters of synapitc vesicles are found (Figs. 2 and 3). Most synapses found in this region are formed between the processes of the non-neurosecretory neurons. The synapses between neurosecretory axons and the processes (or ordinary endings) of neurons are occasionally found in the same region. The neurosecretory axons are either pre- or post-synaptic (Figs. 4 and 5). When the neurosecretory axon is postsynaptic, it is possible that the synapses play a significant role in the conveyance and release of hormones of neurosecretory origin into the vascular channels. The physiological significance of the presynaptic neurosecretory axon is not understood at present. The synapse was not found in the frog pars nervosa and the median eminence, as was not found in birds.
社団法人日本動物学会の論文
1963-02-15