nerve cord


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Related to nerve cord: notochord

nerve cord

a strand of nervous tissue that forms part of the CENTRAL NERVOUS SYSTEM of invertebrates.
References in periodicals archive ?
Recovery assays were performed for rotenone using standards to reach 0.5, 1.0, and 2.0 mg/kg concentrations in midgut, brain, ventral nerve cord, hemolymph, and excreta.
In invertebrates, a nerve cord serves the same function as a vertebrate's spinal cord.
To identify the cellular origin of the tonofilaments, cells near the brain and ventral nerve cord were examined.
(28,58) Nerve cord, notochord, mesenchyme, or endoderm cells are derived from the anterior vegetal cells (Fig.
Indeed, leech microglial cells can be isolated from a freshly dissected nerve cord. Then microglial cells may be cultured in vitro.
The fish has a nerve cord down its back and is said to be regarded as a representative of the first animals to evolve a backbone.
The fish has a nerve cord down its back and is regarded as a representative of the first animals to develop a backbone.
If an earthworm suffers amputation, and a portion of the nerve cord near the cut is removed, regeneration fails.
A recent study on sipunculan neurogenesis revealed that the larvae of this taxon undergo cryptic segmentation by forming a paired ventral nerve cord with associated, subsequently appearing, segmental commissures and four pairs of perikarya (Kristof et al., 2008; Wanninger et al., 2009; Fig.4D).
In 1894, marine biologist Walter Garstang suggested that the primitive ciliary band, which harbors neurons, evolved into the dorsal nerve cord of vertebrates.
Recently, the pan-neural synaptotagmin B monoclonal antibody generated from the sea star radial nerve cord has been used to great effect in studies of the LNS of echinoids, holothuroids, and asteroids (Nakajima et al., 2004a, b; Burke et al., 2006; Nakano et al., 2006; Bishop and Burke.
A notochord is a skeletal component, not a primitive nerve cord.