The structure and function of the labrum in the lobster Homarus gammarus (L.)

Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character
R M Robertson, M S Laverack

Abstract

The labrum of decapod crustaceans is a soft lobe overhanging the mouth. The labral skeleton, musculature and innervation of Homarus gammarus are described. There are three bilateral groups of sensory neurons innervating the floor, lobe and lateral walls of the labrum. These are probably responsible for the phasic afferent activity that can be recorded from the inner labral nerve on mechanical deformation of the labrum. The labrum undergoes rhythmical retraction-protraction movements during ingestion and is shown to be active during both mandibular activity and oesophageal peristalsis. Studies were made on the duration and frequency of labral "swallowing" activity. The role of the labrum in feeding is discussed.

References

Jan 1, 1976·Progress in Neurobiology·A I SelverstonJ P Miller
Nov 30, 1979·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·R M Robertson, M S Laverack
Mar 20, 1978·Pflügers Archiv : European journal of physiology·Y M KotzO L Vinogradova
Feb 25, 1977·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·G Fryer
Aug 1, 1974·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·D M Maynard, M R Dando
Aug 1, 1972·Psychological Medicine·J I EvansM Tinker
Feb 25, 1969·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·M R Dando, M S Laverack
Sep 15, 1968·Experientia·M R Dando, M S Laverack

Related Concepts

Metazoa
Electrophysiology (Science)
Homarus
Vestibule of Mouth
Sensory Receptor Cells

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