Nerve cord may refer to the following structures: in invertebrates, it refers to the
ventral nerve cord, whereas; in chordates, it stands for the dorsal nerve cord.
Nerve cord definition, a single hollow tract of nervous tissue that constitutes the
central nervous system of chordates and develops into the spinal cord and brain
Dec 29, 2014 ... Nerve cord is a term that can refer to either (1) the single, hollow, fluid-filled,
dorsal tract of nervous tissue that is one of the defining ...
1 : the pair of closely united ventral longitudinal nerves with their segmental
ganglia that is characteristic of many elongate invertebrates (as earthworms).
Main Entry: nerve cord. Function: noun 1 : a pair of closely united nerves that run
along the inside of the body on the lower side of many long-bodied ...
nerve cord. Also found in: Medical, Encyclopedia. Related to nerve cord:
notochord. nerve′ cord`. n. 1. the hollow dorsal tract of nervous tissue that
...first to develop a central nervous system with a brain. The nervous system of a
free-living flatworm such as Planaria consists of a brain, longitudinal nerve cords
An earthworm's ventral nerve cord carries signals from the brain to the body and
allows for the coordination of the ganglia in each segment past the fourth.
The ventral nerve cord, connected to the brain by the circumesophageal
connectives, is composed of a double row of ganglia connected longitudinally by
The dorsal nerve cord and the notochord are two very different types of tissue.
The dorsal nerve cord develops from ectoderm which becomes nervous tissue