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Vascular and Pericardiac Pressures in Ascidiella Aspersa (Urochordata: Ascidiacea)

Published online by Cambridge University Press:  11 May 2009

H. D. Jones
H. D. Jones
Affiliation:
Department of Zoology, University of Manchester, Manchester M13 9PL
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Extract

INTRODUCTION

The heart of tunicates is of physiological interest for several reasons: it is a simple peristaltic tube; it lacks valves; and the direction of the contractions changes periodically thus reversing the direction of blood flow. The phylogenetic importance of tunicates, being invertebrate chordates, also make physiological details of interest.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 65 , Issue 4 , November 1985 , pp. 911 - 922
Copyright
Copyright © Marine Biological Association of the United Kingdom 1985

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