Related Experiment Video
Updated: Oct 4, 2026

The Swimmeret System of Crayfish: A Practical Guide for the Dissection of the Nerve Cord and Extracellular Recordings of the Motor Pattern
Published on: November 25, 2014
Chromatophore motor fields in the squid, Lolliguncula brevis
G P Ferguson1, F M Martini, H M Pinsker
1Marine Biomedical Institute, University of Texas Medical Branch, Galveston 77550-2772.
Abstract:
Chromatophore motoneurones in Lolliguncula brevis are known to originate in the suboesophageal lobes of the brain and to project directly to the mantle and fin through bilateral stellate ganglia and fin nerves. The chromatophore motor fields of stellar and fin nerves were investigated by stimulation of the cut end of individual nerves in a semi-intact preparation. This elicited expansion of yellow and brown chromatophores in distinct motor fields. Brown chromatophores extended over the entire mantle, whereas yellow chromatophores were limited to the dorsal and lateral mantle areas. Combined nerve stimulation and lesions demonstrated substantial overlap between adjacent chromatophore motor fields and innervation of individual chromatophores by different stellar nerves.
Related Concept Videos
Microtubules in Cell Motility
Channel Rhodopsins
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
Cell Motility through Blebbing
Blebbing Through the Matrix
In multicellular...
Cell Polarization by Rho Proteins
Mechanism of Ciliary Motion
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
Flagella and Motility in Bacteria

