Neuromuscular junctions in the leech

Barbara A. Yaksta‐Sauerland, Richard E. Coggeshall

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Neuromuscular junctions on leech body wall muscle have been described. Based on vesicle morphology, there are two types of junctions, (I) clear vesicle terminals, and (II) dense core vesicle terminals. Further, the dense core terminals are‐of two types, (1) small terminals which appear to directly innervate body wall muscle cells, and (2) large terminals which appear to synapse on clear vesicle terminals which in turn innervate body wall muscle cells. The clear vesicle ending resembles known cholinergic junctions in other systems. The cores in the dense core vesicle terminals are regarded as containing 5‐HT because (1) they are structurally identical with the 5‐HT containing cores in granules of the Retzius cells, (2) they contain a chromaffin substance, and (3) they become radioactive when tritiated 5‐HT is present but not when 5‐HTP or noradrenaline is present.

Original languageEnglish (US)
Pages (from-to)85-99
Number of pages15
JournalJournal of Comparative Neurology
Issue number1
StatePublished - Sep 1 1973

ASJC Scopus subject areas

  • General Neuroscience


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