Journal article

Publication year: 1996

Pages: 258-267

Journal: Zoology

Volume number: 99

Issue number: 4

ISSN: 0944-2006

Publisher: Elsevier

Abstract: 

The cephalic aorta of Nautilus macromphalus (G. B. Sowerby) and Nautilus pompilius (L.) has a four-layered wall with an extended marginal blood sinus between tunica adventitia and tunica periadventitia. The nerve terminals within these two peripheral layers contain different types of vesicles; transparent circle divide 32-65 nm), dense cored (circle divide 59-99 nm) and osmiophilic (circle divide 68-116 nm).

The high activity of acetylcholinesterase (E. C. 3.1.1.7), localized histo- and cytochemically in nerve endings and muscle cells of these marginal layers, suggests a cholinergic component in the nervous control of the vessel wall.

Evidences for a catecholaminergic component in regulation of the vessel tonus are provided by a high activity of the monoaminooxidase (E. C. 1.4.3.4), the glyoxylic acid induced fluorescence of nerve terminals (Em(max) = 480 nm and Em(max) = 520 nm) within the tunica adventitia and tunica periadventitia, and by the spectrum of catecholamines of the vessel wall revealed by HPLC analyses.

Immunocytochemically FMRFamide or related peptides were localized within axon terminals.

Harvard Citation style: Kleemann, S. and Schipp, R. (1996) The innervation of the cephalic aorta of nautiloids (Tetrabranchiata, Cephalopoda), Zoology, 99(4), pp. 258-267

APA Citation style: Kleemann, S., & Schipp, R. (1996). The innervation of the cephalic aorta of nautiloids (Tetrabranchiata, Cephalopoda). Zoology. 99(4), 258-267.