groove
[gro̳v] a narrow, linear hollow or depression.
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
branchial cleft of a fish, formed by rupture of the membrane separating a corresponding entodermal pouch and ectodermal groove.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.