costal process

costal process

[′käst·əl ¦präs·əs]
(anatomy)
An anterior or ventral projection on the lateral part of a cervical vertebra.
(embryology)
An embryonic rib primordium, the ventrolateral outgrowth of the caudal, denser half of a sclerotome.
References in periodicals archive ?
The new genus can be associated with Urodidae by the forewing [Rs.sub.4] vein terminating above the apex and the male genitalia possessing a digitate costal process. It is distinguished from all other urodid genera in having asymmetric valvae in the male genitalia and 4 signa in the female genitalia.
The caudal end of the costal process of the transverse process of the 6th cervical vertebra was pointed.
DISCUSSION: Ribs develop by endochondral ossification from tips of lateral mesenchymal condensations called costal process in the thoracic region.
Chrysonasma caliginosa has a light orange to grayish orange ground color of the forewing, a fringe that is shining orange gray at distal half, and the male genitalia with valva lacking a costal process, whereas C.
In the 5thweek, the sclerotomic cells of the somites lose their adherence and migrate to the vertebral centrum, neural processes and costal processes. Each thoracic neural process gives rise to a cartilaginous pedicle, transverse process and lamina.