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Journal of Experimental Biology 45,343-356 (1966)
Published by Company of Biologists 1966

Neuromuscular Mechanisms of Burrow Irrigation in the Echiuroid Worm Urechis Caupo Fisher & Macginitie : I. Anatomy of the Neuromuscular System and Activity of Intact Animals

JAMES V. LAWRY JR. 1

1 Department of Biological Sciences, Stanford University, Stanford, California; Gatty Marine Laboratory, St Andrews, Scotland

1. The anatomy of the muscular and nervous systems of Urechis is described.

2. An apparatus is described whereby it is possible to record the parameters of the peristaltic waves used in irrigating the tube.

3. Urechis is continuously active and shows no periodicity under conditions of constant temperature. About 1280 peristaltic waves are initiated, and about 29 l. of water are moved, in 24 hr.

Submitted on June 8, 1966






© The Company of Biologists Ltd 1966