| 释义 |
Medullary groove
| (Anat.) | a groove, in the epiblast of the vertebrate blastoderm, the edges of which unite, making a tube (the medullary canal) from which the brain and spinal cord are developed. |
See also: Medullary EncyclopediaSeegroovemedullary groove
groove [gro̳v] a narrow, linear hollow or depression.branchial groove pharyngeal groove.Harrison's groove a horizontal groove along the lower border of the thorax corresponding to the costal insertion of the diaphragm; seen in advanced rickets in childhood.medullary groove (neural groove) that formed by the beginning invagination of the neural plate of the embryo to form the neural tube.pharyngeal groove a groove between a pair of pharyngeal arches in a mammalian embryo, homologous to the cleft" >branchial cleft of a fish, formed by rupture of the membrane separating a corresponding entodermal pouch and ectodermal groove.neu·ral groovethe gutterlike groove formed in the midline of the embryo's dorsal surface by the progressive elevation of the lateral margins of the neural plate; the ultimate dorsal fusion of the margins results in the formation of the neural tube. Synonym(s): medullary groove |