nerve cord
Invertebrate nervous trunk
A nerve cord is a bundle of nerve fibers running along the length of an animal's body, serving as the main pathway for neural signals.
In vertebrates, the spinal cord is this structure, protected by the backbone.
Invertebrates like insects and worms have ventral nerve cords running along their undersides.
The earthworm's nerve cord coordinates movement of its segments.
Of the back
- ventralOf the belly
- ganglionPeripheral nerve cell cluster
- axonNeuron's signal-sending projection
- segmentedDivided into sections
paired · invertebrate · arthropod · annelid · insect · crustacean · mollusk · nematode
Embryonic axial support structure
- ectodermEmbryo's outer cell layer
- embryologyStudy of prenatal development
- morphogenesisDevelopmental shape emergence
- organogenesisEmbryonic tissue becoming structures
induction · gastrulation · somite · mesoderm · chordate · vertebrate · lancelet · hollow
Area of pathological change
- damageHarm or impairment
- injuryPhysical or psychological harm
- compressionForcing into smaller space
- degenerationProgressive loss of function
regeneration · severed · trauma · paralysis · dysfunction · impairment · transection · repair
dorsal
Of the back
segmented · paired · invertebrate · arthropod · annelid · insect · crustacean · mollusk · nematode · flatworm
notochord
Embryonic axial support structure
- ectodermEmbryo's outer cell layer
- embryologyStudy of prenatal development
- morphogenesisDevelopmental shape emergence
organogenesis · induction · gastrulation · somite · mesoderm · chordate · vertebrate · lancelet · hollow
lesion
Area of pathological change
- damageHarm or impairment
- injuryPhysical or psychological harm
- compressionForcing into smaller space
degeneration · regeneration · severed · trauma · paralysis · dysfunction · impairment · transection · repair · recovery
nerve cordnerve net
Dispersed sensory mesh
brain · peripheral nerves · nerve endings · ganglia · sensory receptors
nerve, nervous, cord, nerves, nervousness, nervy, chord, neurotic, neurosis