Medical Subject Headings

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MESH/D009672
http://purl.bioontology.org/ontology/MESH/D009672
Preferred Name

Notochord

Definitions
A cartilaginous rod of mesodermal cells at the dorsal midline of all CHORDATE embryos. In lower vertebrates, notochord is the backbone of support. In the higher vertebrates, notochord is a transient structure, and segments of the vertebral column will develop around it. Notochord is also a source of midline signals that pattern surrounding tissues including the NEURAL TUBE development.
Synonyms
Notochords
Chordamesoderm
Chordamesoderms
Type http://www.w3.org/2002/07/owl#Class
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