Notochord - Wikipedia In vertebrates the notochord is an embryonic structure that disintegrates, as the vertebrae develop, to become the nucleus pulposus in the intervertebral discs of the vertebral column In non-vertebrate chordates, the notochord persists during development
The notochord: structure and functions - PMC The notochord is an embryonic midline structure common to all members of the phylum Chordata, providing both mechanical and signaling cues to the developing embryo In vertebrates, the notochord arises from the dorsal organizer and it is critical for proper vertebrate development
Notochord | Embryonic, Vertebrate, Development | Britannica Notochord, flexible rodlike structure of mesodermal cells that is the principal longitudinal structural element of chordates and of the early embryo of vertebrates, in both of which it plays an organizational role in nervous system development
Notochord: Definition, Function and Structure | Biology Dictionary The notochord is an elastic rod which extends through Chordate organisms, providing rigid support In the more derived Chordates, the Vertebrates, the notochord is replaced by the vertebral column, and becomes the cartilaginous substance between vertebrae
The notochord: Current Biology - Cell Press What is the notochord? The notochord is the defining structure of the phylum Chordata, which includes all vertebrates In its ‘mature’ state the notochord is a rod of large cells constrained by a thick extracellular sheath and positioned between the developing spinal cord and gut
Notochord - New World Encyclopedia Notochord is a flexible, rod-shaped supporting structure that is one of the distinguishing features of the phylum Chordatas, being found at some point in the life cycle of all chordates (vertebrates, tunicates, and lancelets)
Notochord - an overview | ScienceDirect Topics A Notochord The notochord is a transient rod-like structure located at the developing midline, ventral to the neural tube and dorsal to the dorsal aorta It is composed of a single column of large vacuolated cells surrounded by a thick BM
Notochord - Embryology It is an early forming midline structure in the trilaminar embryo mesoderm layer initially ventral to the ectoderm, then neural plate and finally neural tube This is a transient embryonic anatomy structure, not existing in the adult, required for patterning the surrounding tissues
NOTOCHORD Definition Meaning - Merriam-Webster The meaning of NOTOCHORD is a longitudinal flexible rod of cells that in the lowest chordates (such as a lancelet or a lamprey) and in the embryos of the higher vertebrates forms the supporting axis of the body
Update on the Notochord Including its Embryology, Molecular Development . . . The notochord is a rod-like embryological structure, which plays a vital role in the development of the vertebrate Though embryological, remnants of this structure have been observed in the nucleus pulposus of the intervertebral discs of normal adults