alternative definition added over 12 years ago by Istvan Miko
The ridge that is extending along the anterior margin of the tergum or sternum, homologous with the primary intersegmental fold, serves as the site of origin of the longitudinal intersegmental muscles.
Reference: Curators. 2010. Gibson, Vilhelmsen, Seltmann, Bertone, Yoder, Miko muscle working group..
Cross reference:
None provided.