| nasolabial groove | A furrow between the wing of the nose and the lip. Synonym: sulcus nasolabialis. (05 Mar 2000) |
|---|---|
| nasopalatine groove | A groove on the vomer lodging the nasopalatine nerve. (05 Mar 2000) |
| nasopharyngeal groove | An indistinct line marking the boundary between the nasal cavities and the nasal part of the pharynx. (05 Mar 2000) |
| neural groove | The gutter-like 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: medullary groove. (05 Mar 2000) |
| subclavian groove | A groove on the inferior surface of the body of the clavicle to which is attached the subclavius muscle. Synonym: sulcus musculi subclavii, subclavian sulcus, sulcus subclavianus. (05 Mar 2000) |
| subcostal groove | A groove in the lower inner border of the rib, lodging the intercostal vessels and nerve. Synonym: sulcus costae, subcostal groove. (05 Mar 2000) |
| supplemental groove | A curvilinear depression normally found on each side of a triangular ridge (crista triangularis). (05 Mar 2000) |
| supra-acetabular groove | A groove, posterosuperior to the acetabulum, that is the attachment for the reflected head of the rectus femoris muscle. Synonym: sulcus supra-acetabularis, supra-acetabular sulcus. (05 Mar 2000) |
| dental groove | A transitory depression in the gingival surface of the embryonic jaw along the line of ingrowth of the dental lamina. (05 Mar 2000) |
| digastric groove | The groove medial to the mastoid process of the temporal bone from which the digastric muscle originates. Synonym: incisura mastoidea, digastric groove, digastric notch, mastoid notch. (05 Mar 2000) |
| inferior petrosal groove | A groove lodging the inferior petrosal sinus, formed by union of similarly named grooves in the petrous part of the temporal bone and the basilar part of the occipital bone. Synonym: sulcus sinus petrosi inferioris, inferior petrosal groove, inferior petrosal sulcus. (05 Mar 2000) |
| infraorbital groove | A gradually deepening groove on the orbital surface of the maxilla, which leads to the infraorbital canal. Synonym: sulcus infraorbitalis. (05 Mar 2000) |
| interosseous groove | The groove on the upper part of the calcaneus, which with a corresponding groove on the talus forms the sinus tarsi. Synonym: sulcus calcanei, calcaneal sulcus, interosseous groove. (05 Mar 2000) |
| interosseous groove of calcaneus | The groove on the upper part of the calcaneus, which with a corresponding groove on the talus forms the sinus tarsi. Synonym: sulcus calcanei, calcaneal sulcus, interosseous groove. (05 Mar 2000) |
| interosseous groove of talus | The groove on the inferior surface of the talus, which with a corresponding groove on the calcaneus forms the sinus tarsi. Synonym: sulcus tali, interosseous groove, talar sulcus. (05 Mar 2000) |